The oil filter for our car to be tightened with a torque of 30 n⋅m. we are using a 15-cm-long oil filter wrench, and we apply a force at the very end of the wrench in the direction that produces maximum torque is 200N.
What is a force?A force is an effect that can alter an object's motion according to the physics. A force can cause object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe the force is as a push or a pull. A force is a vector quantity since it has both the magnitude and direction. It is calculated using newton SI unit (N). Force is denoted by the letter F. (formerly P).
The net force acting on an object is equal to rate at which its momentum varies over time, according to Newton's second law in its original formulation. This law suggests that object's acceleration is directly proportional to the net force acting on it, is in the direction of the net force, and is inversely proportional to the mass of the object if the object's mass is constant.
Thrust, which increases an object's velocity; drag, which decreases an object's velocity; and torque, which causes the changes in an object's rotational speed, are all concepts connected to force. Each part of an extended body often exerts the stresses on the sections that are nearby; the distribution of these forces throughout the body is what is known as the internal mechanical stress. Due to the balance of forces, such internal mechanical stresses do not generate acceleration of that body. Pressure is a straightforward form of the stress that, if unbalanced, can cause the body to accelerate. Pressure is distribution of several small forces applied over an area of a body. Stress typically results in flow of fluids or the deformation of solid materials.
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A baseball with a mass of 145 g is pitched to a batter. The ball accelerates at 10 m/s?. What is the net force?
Answer:
1.45 N
Explanation:
Newton's Second Law: F=ma
Convert 145 grams to kilograms
0.145kg*10m/s^2
1.45 N
A girl runs at 10m/sec for 6 seconds, and then walks at 5 m/sec for 4 seconds. What is the average speed of the girl for the entire trip?
The average speed of the girl for the entire trip is 8m/s
Firstly we have to find the total distance that the girl covered.
As formula says
Distance = speed * time
So according to the question;
Total Distance = 10×6 + 5×4
= 60+20
= 80
And the total time taken by the girl = 6+4
= 10
Therefore, by Putting the values in the formula:
Average speed = 80÷10
=8m/s
Hence, the average speed of the girl is 8m/s.
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A dropped object reaches 88.2m/s in its fall. How long did it take to reach this speed?
The time taken for the object to reach its highest speed is 9 seconds.
What is time of motion?The time of motion of an object is the time taken for the object to travel from its initial position to the final position.
The time taken for the object to reach its maximum or highest speed is calculated as follows;
v = u + gt
where;
v is the final velocity of the rock at the highest pointu is the initial velocity of the rockg is acceleration due to gravityt is time of motionThe initial velocity of the object is zero, u = 0
v = u + gt
v = 0 + gt
v = gt
t = v/g
t = (88.2 m/s) / (9.8 m/s²)
t = 9 seconds
Thus, we can conclude that time from the initial position of the object to the final position of the object is 9 seconds.
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What’s The difference between oxygen and water.
100 POINTS
if a wooden box and a steel box with identical shapes are holding under water, the wooden box tends to float when released but the steel box sinks. this is because the buoyant force experiences by the wooden box is larger than that experiences by the steel box.
The buoyant force is same for both boxes. Steel box sinks because its density is higher than water and the density of wood is lower than water.
An object that is fully or partially submerged in a fluid will experience an upward push called the buoyant force. Another name for this upward thrust is up thrust. An object's propensity to float in a fluid is known as buoyancy. Any object submerged in a liquid or gas experiences an upward force known as the buoyant force when there is gravity present.
When an object is submerged in a static fluid, pressure differences acting on its opposing sides provide buoyancy. water density is less. After reading this article, you will be able to describe the buoyant force and the rationale behind why fluids push submerged things higher. Let's discuss the definition of buoyancy and its various manifestations.
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a train is moving with 36 km per hour speed driver accelerate uniformly with acceleration 5 metre per second square find the velocity after 5 second and also find the distance covered by the train during this time
The distance covered by the train is 225m.
Given,
u = 36km/hr = 10ms^(-1)
a = 5ms^(-2) ,t = 5sec
According to Newton's first law of motion:
v = u + (a × t)
v = 10 + (5 × 5) = 35ms^(-1)
According to Newton's third law of motion:
(v)²- (u)² = 2as
(35)² - (10)² ÷ (2 × 2.5) = s
s = 225m
The final velocity of the train is derived using Newton's first law of motion. Where, u = initial velocity, a = acceleration,v = final velocity, and t = time. The equations of motion define the behavior of the physical schema in order of motion.
Then find the distance covered by the train implementing the third equation of motion with velocity v, starting velocity u, constant velocity a, and displacement.
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Identical balls are dropped from the same initial height and bounce back to half the initial height. In case 1 the ball bounces off a cement floor and in case 2 the ball bounces off a piece of stretchy rubber.
The change in momentum of the ball will be biggest in Case 1.
The change in momentum of the ball will be highest in the case 1, where the ball bounce back to it's half the initial height after the collision with the cement floor.
When the ball hits the cement floor, the time of contact between ball and the floor is the very very less. This is why the force imparted by the cement floor on the ball will be very high.
The impulse I imparted on the ball by floor is.
I = ∆F/∆t
As the force is very high and the time of contact is very less. The impulse will be very high. And as we know from the impulse momentum theorem. The impulse is equal to the change in momentum.
So the change in momentum will be biggest in case 1.
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Complete question - Identical balls are dropped from the same initial height and bounce back to half the initial height. In case 1 the ball bounces off a cement floor and in case 2 the ball bounces off a piece of stretchy rubber. In which case is the change in momentum of the ball between the instant just before the ball collides with the floor or rubber and the instant just after the ball leaves the floor or rubber the biggest?
Case 1
Case 2
Same in both
since we are only concerned about the acceleration due to the collision, why is it important to zero the dynamic sensor while stationary on the track?
Zero the dynamic sensor is important because of its sensitivity, resolution, range, zero drift and repeatability.
Dynamic applications describe cyclical, quick measuring processes like those frequently seen in presses. In dynamic applications, it's crucial to tare the zero point at regular intervals to prevent the measuring signal from wandering.
The input for automated zero point adjustments is provided by the strain transducers. The PLC can be used to start the zero point adjustment. The signal is reset (pulled to zero) and the zero point adjustment is performed if the input is pulled to 3 V.
The sensor is in measuring mode if the input is open. Instead of using "Active-Low-Levels," the reset logic is also possible with "Active-High-Levels".
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Select the correct answer.
Read the excerpt from paragraph 2.l
(2)... And we celebrate how, with their overwhelming vote to confirm Justice Sotomayor, the United States Senate
Republicans and Democrats tore down yet one more barrier and affirmed our belief that in America, the doors of
opportunity must be open to all.
Why is it relevant to include the detail that both Democrats and Republicans approved Sonia Sotomayor's nomination?
-
O A.
It confirms the ideal of American principles when people from different groups join together for a common
goal.
OB.
It affirms that they all knew her exceptional life story and therefore wanted to help her fulfill her aspirations.
O C.
It emphasizes that Sonia Sotomayor inspired so many people across America with her extraordinary
achievements.
O D.
It draws a parallel between the founding fathers and the Senators who all were committed to breaking down
barriers.
Answer:
the answer is A
Explanation:
I took the test
Answer:
A
Explanation:
a particle of charge q and mass m is accelerated from rest through a potential difference v, after which it encounters a uniform magnetic field b. if the particle moves in a plane perpendicular to b, what is the radius of its circular orbit?
The radius of its circular orbit is calculated to be 1/B √(2qV/m)
If the field is vacuum, then the magnetic field is dominant factor determining the motion. As the magnetic force is perpendicular to the direction of travel, a charged particle follows a curved path in a magnetic field. The particle then continues to follow curved path until it forms a complete circle. As the magnetic force is perpendicular to velocity, so that no work is done on the charged particle. The kinetic energy of the particle and speed remain constant. The direction of motion is usually affected but not the speed.
The speed of particle just before entering into magnetic field is v₀
qV = 1/2*m *v₀²
v₀= √(2qV/m)
Radius of the circular path is given by
r= mv₀/qB
r=m/qB √(2qV/m)
=1/B √(2qV/m)
Radius of circular orbit = 1/B √(2qV/m)
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in coming to a stop, an old truck leaves skid marks 45 m long on the highway. assuming a deceleration of 6m/s2 , estimate the speed of the truck just before braking.
Deceleration is the slowing down of the body as it moves away from its starting place. Negative acceleration is a common term for deceleration.
The kinematic equation was used to get the truck's estimated speed right before braking as
v2 = u2 + 2*acceleration *displacement.
Consequently,
[2*(45.0 m)*(6 m/s)]
= √540 = 23.24 m/s
The velocity, or v, of an object is the rate at which its direction is changing as seen from a particular angle and as measured by a particular unit of time.
The rates at which an object's velocity with respect to time changes are known as accelerations and are stated as constants. Whenever a force is operating on an object, it will always accelerate in a direction that is parallel to that force.
The length of a displacement vector is the smallest distance between the starting and ending coordinates of a moving point P.
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4) Free fall is a situation in which the only force acting upon an object is gravity. Why do all objects in free fall have the same acceleration?
A) their masses are always the same
B) acceleration due to gravity is always the same
C)
the distance between two objects is always the same
D) the gravitational force between two objects are always the same
All objects in free fall have the same acceleration because acceleration due to gravity is always the same. So option B is correct.
What is gravity?Gravity can be referred to as the force by which a planet or other body draws objects toward its center.
Gravity is one of the universe's fundamental forces and dominates every moment of our conscious experience which helps keeps us close to the ground.
All objects in free fall have the same acceleration because acceleration due to gravity is always the same.
Free fall is a special type of motion in which the only force acting upon an object is gravity which will make all objects with the same rate of acceleration, regardless of their mass.
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how the solar system was formed. Use theterms hypothesis observation, and nebula.
Answer: The nebular theory states that our solar system formed from the gravitational collapse of a giant interstellar gas cloud—the solar nebula. – (Nebula is the Latin word for cloud.) Kant and Laplace proposed the nebular hypothesis over two centuries ago.
Explanation:
A quantity that has only magnitude is called a vector
A physical quantity which has only magnitude is called scalar quantity eg: speed and distance whereas physical quantities which have both magnitude and direction are called vector quantities eg: velocity and displacement.
A car moves at 6 m/s for 3 seconds. How far does the car travel?
Answer:
18 m
Explanation:
Velocity = distance / time
v = d/t
d = vt
d = (6 m/s) (3 s)
d = 18 m
Hope that helps
_____is a measure of amount of matter in a given amount of space
Answer: Density
Explanation:
I remember learning it in 9th-grade physic class.
a 7li nucleus with a charge of 3e and a mass of 7 u and a proton with a charge of e and a mass of 1 u are both moving in a plane perpendicular to a magnetic field . the two particles have the same monentum. the ratio of the radius of curvature of the path of the proton (rp) to that of the 7li nucleus (rli) is
Kinetic energy is transformed into potential energy. The charges on the nuclei of lithium and thorium, which have Z=3 and Z=90, respectively, are 3e and 90e.
Potential energy is created by converting kinetic energy (we use the classical formula since v is significantly less than c). Lithium has a Z=3 and thorium has a Z=90, meaning that the charges on each of those nuclei are 3e and 90e, respectively. The "e" in the kinetic energy unit MeV is removed by manipulating the terms, and the other factor of e is set to be 1.610 19 C.
We note that K= 1/4π0 can be written as 8.99*109V. m/C. Thus, from energy conversation, we have
Kinetic Energy=U = r=kq1q2/K=
(8.99x10^9 v.m/C)(3x1.6x10^-19)(90e)/3.00x10^6ev
which yields r= 1.3x10^-13 m (or about 130 fm).
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sam, whose mass is 80 kg , takes off across level snow on his jet-powered skis. the skis have a thrust of 170 n and a coefficient of kinetic friction on snow of 0.1. unfortunately, the skis run out of fuel after only 13 s .
The distance covered by Sam within the first 13 seconds is 96.75 m.
Equation :Given that the mass m of Sam is 80 kg and the force F is 170 N. The coefficient of friction is 0.1.
The net force is given below
Fₙ = F - F₁
Where Fₙ is the net force and F₁ is the friction force.
Fₙ = 170 - μmg
Fₙ = 170 - 0.1 x 80 x 9.8
Fₙ = 91.6
Fₙ = ma
91.6 = 80 x a
a = 91.6 / 80
a = 1.145 m/s²
For the first 13 seconds.
So, the distance covered by Sam with this acceleration is given .
s = ut + 1/2 at²
u is the initial velocity which will be zero and t is the time interval.
So,
s = 1/2 at²
s = 1/2 x 1.145 x 13²
s = 96.75 m
Hence, the distance covered by Sam within the first 13 seconds is 96.75 m.
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write the equation used to calculate required fastener torque as a function of desired preload and bolt size. then, explain how fastener grade and tpi affect the required preload.
The equation used to calculate required fastener torque as a function of desired preload and bolt size is τ = K D [tex]F_{i}[/tex].
τ = K D [tex]F_{i}[/tex]
[tex]F_{i}[/tex] = σ[tex]_{t}[/tex] * A[tex]_{t}[/tex]
σ[tex]_{t}[/tex] = 0.9 * σ[tex]_{y}[/tex]
τ = Torque
K = Torque co-efficient
D = Nominal bolt diameter
[tex]F_{i}[/tex] = Desired preload
σ[tex]_{t}[/tex] = Tensile stress
A[tex]_{t}[/tex] = Tensile stress area
σ[tex]_{y}[/tex] = Ultimate yield strength
As the fastener grade increases, the required preload also increasesAs the TPI ( Threads per Inch ) increases, the required preload also increasesTherefore, the equation used to calculate required fastener torque as a function of desired preload and bolt size is τ = K D [tex]F_{i}[/tex].
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What do you mean by mechanical advantage of lever is 4. Please help me
Answer:
MA of a simple machine is 4. It means that load overcome is 4 times more than effort used in the machine. This machine can multiply force 4 times the effort used.
a horizontal force of 150 n is used to push a 41.0-kg packing crate a distance of 6.15 m on a rough horizontal surface. if the crate moves at constant speed, find each of the following.
differentiator utilizes an ideal op amp, a 30 kω resistor, and a 0.03 μf capacitor. what is the frequency 0f in hz at which its input and output sine‐wave signals have equal magnitude? what is the output signal for a 1 v peak‐to‐peak sine‐wave input with frequency equal to 10
The work calls for a 10k Omega resistance value and a 1 nF capacitance value. Being aware of those output gives us a clear advantage. To get the frequency of unity gain, we can utilize the transfer function (2.34)
The output waveform will consist of positive and negative spikes of size Vsat, which is roughly 13V for a 15V op-amp power source, for a square wave input, let's say 1V peak and 1 KHz.
The differentiated output will be zero whenever the input is held constant at 1V.
For a perfect square wave, the input slope is infinite when it transitions between the t 1V levels.
As a result, the output is clipped to around 13V for a 15V op-amp power source.
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The question was incomplete. Check below the full question.
differentiator utilizes an ideal op amp, a 30 kω resistor, and a 0.03 μf capacitor. what is the frequency 0f in hz at which its input and output sine‐wave signals have equal magnitude? what is the output signal for a 1 v peak‐to‐peak sine‐wave input with frequency equal to 10f₀ ?
The density for manganese is 7.47 g/cm3. What would be the mass of a 40 cm3 piece of manganese?
Answer:
298.8g
Hope this helps! :)
URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS Which statement is true about the relationship between energy and temperature?
A. As energy increases, temperature also increases
B. As temperature increases, energy remains the same.
C. As energy increases, the temperature remains the same.
D. As energy increases, temperature decreases.
Answer:
A
Explanation:
because both energy and temperature ️ increase both are related.
a 1.83 kg book is placed on a flat desk. suppose the coefficient of static friction between the book and the desk is 0.562 and the coefficient of kinetic friction is 0.305 .
Answer: the force required to begin moving the book is 7.93 N.
Explanation:The concepts required to solve this problem is forces.
Initially, calculate the force required to begin moving the book by using the expression for the static frictional force. Later, calculate the force required to keep the book moving by using the expression for the kinetic friction.
Here,
is the coefficient of static friction and N is the normal force.
Here,
is the coefficient of kinetic friction and N is the normal force.
Step: 1
The expression for the force required to begin moving the book is,
The normal force acting on the book ,
Substitute mg for N in the equation
.
Substitute 0.442 for
, 1.83 kg for m,
for g in the above equation.
Therefore, the force required to begin moving the book is 7.93 N.
Explanation:
The external force is required to move the book on the surface of the desk is known as static frictional force.
The forces acting on the book along the y direction is,
By using Newton’s second law of motion the net forces acting along y direction is,
As the book is along the x direction means that there is no motion of the book along the y direction. Hence the acceleration of the book is equal to zero.
Now the normal force is equal to the weight of the book.
Hint:
Calculate the force required to keep the book moving by using the expression for the kinetic friction.
Step: 2
The force required to keep the book moving ,
The normal force acting on the book ,
Substitute mg for N in the equation
.
Substitute 0.240 for
, 1.83 kg for m,
for g in the above equation.
Therefore, the force required to keep the book moving is 4.30 N.
The kinetic frictional force acts on the object if the object is in motion.
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If a 1.83 kg book is placed on a flat desk, 10.089 N of force is required to start moving the book. If the book and desk experience static friction of 0.442 and kinetic friction of 0.240, respectively.
A force that acts between moving surfaces is referred to as kinetic friction. A force acting in opposition to the direction of a moving body on the surface is felt. The two materials' coefficient of kinetic friction will determine how much force is applied.
The book needs force to move
Ff = N * s Ff = (1.83 kg)(9.81 m/s2)(0.562)=10.089 N
The book needs force to continue.
Ff = (1.83 kg) (9.81 m/s2) (0.305) = 5.47 N
The force that prevents a sliding object from moving is known as friction. Everything has kinetic friction, which prevents two or more objects from moving in unison. In contrast to how an object would like to slide, the force operates in that direction. When a car needs to stop by kinetic friction, we engage the brakes, and that's when friction is created. Again, friction is to blame when one wishes to stop abruptly while walking. however, when we are forced to stop in the middle of a puddle.
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6.0-μf capacitor is connected in series with a 5.0 mω resistor, and this combination is connected across an ideal 15-v dc battery. what is the current in the circuit when the capacitor has reached 20% of its maximum charge?
Applied voltage across the capacitor is , Vo = 15 v
Capacitance , C = 6 × 10-6 F
Resistance in the circuit , R = 5 M.ohm = 5 × 106 ohm.
• Maximum charge in the capacitor is,
Q = CVo = (6×10-6 F)×(15 v) = 90 × 10-6 c
20% of maximum charge Q is, q = 0.2 ×(90×10-6) c
q =18×10-6 c.
when charge is 20% of maximum charge , voltage across the capacitor is,
V = q/C
V = (18 × 10-6 c)/(6 × 10-6 F) = 3 v
• At that time , voltage of the battery is Vo = 15 v
Voltage across the capacitor is , V = 3 v
Resistance in the circuit, R = 5 × 106 ohm
So, applying ohm's law :
Current in the circuit, I = (Vo - V)/R
> I = (15 - 3)/(5×106) A
> I = 2.4 × 10-6 A = 2.4 \muA
The current in the circuit is 2.4 \muA .
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A car is traveling at a constant velocity of 60 km/h east for 4 hours.
Choose the correct statement about the acceleration of the car.
A
The acceleration of this car IS positive.
B
The acceleration of this car is negative.
C
The acceleration of this car is zero.
D
m
The acceleration of this car is 15 Co
The acceleration of this car is zero. Because Acceleration is the change of velocity with respect to time and since car maintains a constant velocity, there is no acceleration.
What is acceleration ?The rate at which a velocity changes over time in both direction and speed. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.
What is the relationship between acceleration and speed?Acceleration is the rate at which speed changes, while speed is the ratio of the distance in a time period. The metric process utilizes meters per second (m/s) as the unit of speed and meters per second squared (m/s²) as the measure of acceleration. Velocity is a scalar quantity, whereas speed is indeed a scalar quantity.
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A stone of 0.5 kg mass is thrown with 5 m/s. Find the kinetic energy of the stone.
Answer
the answer is 6.25
Explanation:
Here, the mass of the stone (m) = 0.5 kg, velocity at which it is thrown (v) = 5 m/s, The kinetic energy of the stone (KE) =? We have, Kinetic energy of the stone (KE) = \ (\frac12mv^21) = \(\frac120.5\times5^2\) = 6.25 Joules Hence, the kinetic energy of the stone (KE) is 6.25 joules. Hope it will be helpful
first find the direction of the magnetic field at wire 2 due to wire 1 (using the right-hand rule). next, find the direction of the force on wire 2 due to this magnetic field. the force on a particle with charge qqq moving with velocity v⃗ v→v vec in a magnetic field b⃗ b→b vec is f⃗
1) Magnitude of the magnetic field equals (permeabilityoffrespace) (currentmagnitude)
2π(distance)
B = μ02πr
Developing the Formula
B = denotes the strength of the magnetic field in Tesla (T)
The permeability of open space (4107Tm/A) is shown by the symbol 0
Electric current strength is expressed as I in terms of amperes (A)
R stands for the meters-long distance (m)
2) the magnetic force per unit length of wire in a uniform field is
F/l =IB sinθ .
force on a length l
current I
uniform magnetic field B ,
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on an icy day your worry about parking your car in a driveway