two cars are diriving down the road. car a has a mass of 1,100 kg and is moving at 20 m/s. car b has a mass of 1000 kg and is moving at 30 m/s. which car has more kinetic energy and why

The time shown by the speedometer corresponding to speed of 10 m/s is 1 s.

The time shown by the speedometer corresponding to speed of 20 m/s is 1 s.

The time shown by the speedometer corresponding to speed of 30 m/s is 1 s.

1. As shown by the speedometer on the right.

The speed of 10 m/s indicated by the speedometer to the right may be used to calculate how long the ball has been falling from the maximum altitude it reached.

Equation for free fall: Vf = Vo - gt

Vo=0, Vf=gt, and t=Vf/g

I suggest using an approximation of g for this problem: g = 10 m/s2 (I'll explain why in a moment).

1 second is equal to [10 m/s]/[10 m/s2].

The time is now dropping. From it has been four seconds since launch, the upward time was three seconds. You may use this to determine the launching speed.

2. The moment the speedometer registers 20 m/s

Determine the launching speed first:

Vo - gt = Vf

Given that the ball took 3 seconds to ascend and that its speed was zero at its highest point, you may calculate:

0 = Vo - gt

Vo=gt=10 m/s2 3 s = 30 m/s

Now, while the ball is moving upward and the speedometer reads 20 m/s, use the beginning velocity to compute.

t = [30 m/s - 20 m/s] / [10 m/s2] = 1 s 20 m/s = 30 m/s - 10 m/s2

Therefore, t = 1 s is the initial solution.

3. The moment the speedometer registers 30 m/s.

The projected speed for the launch is also 30 m/s.

This reading therefore reflects the precise moment the ball was released.

Time is therefore 0 and the launch moment remains the same.

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A force is a power that can exchange the movement of an object. A pressure can reason an object with mass to exchange its pace, i.e., to boost up. force can also be described intuitively as a push or a pull. A force has both value and path, making it a vector amount.

Acceleration is the price of change of the rate of an item with admire to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the internet pressure acting on that item

Force = mass × acceleration

since friction is zero

mass = Force / acceleration

         = 14 / 3.45

         = 4.0579 kg

On adding a second block of the same mass

total mass = 4.0579 + 4.0579 kg

                =  8.2 kg

new,

acceleration = force/ mass

                      = 14/8.2

                      = 1.7073 m/s²

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Kinetic Energy = 1/2 * m *(v*v)

M= 1000

V=3 m/s

KE=1/2 * 1000 * (4*4)

KE= 500*16= 8000 J.

To calculate kinetic energy Find the square of the object's velocity. Multiply this square by the mass of the object. The product is the kinetic energy of the object. The kinetic energy of a moving car is KE=1/2mv^2. Create and test a function called KE to find the kinetic energy of a moving car given a vehicle mass m and velocity v.

As every engineer knows calculating energy is easy. The unit of electrical energy is the kilowatt hour. It is determined by multiplying the amount of electricity consumed by the number of hours the electricity was consumed. Multiply this by the cost per kWh to get the total energy cost. There are five main types of kinetic energy radiant thermal, sound electrical, and mechanical energy. Radiant energy is related to ultraviolet and gamma rays that are constantly moving through space. Acoustic energy is kinetic energy in the form of vibration or noise.

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Answer:

Kinetic energy = 8 KJ

Explanation:

Given information,

→ Mass of car = 1000 kg

→ Velocity = 4 m/s

Now we have to,

→ Find the required Kinetic energy.

Let us assume that,

→ Kinetic energy = x

The formula we use,

→ KE = (1/2)mv²

Then the value of x will be,

→ x = (1/2)mv²

→ x = (1/2) × 1000 × (4)²

→ x = (1000/2) × 16

→ x = 500 × 16

→ x = 8000 J

→ [ x = 8 KJ ]

Hence, the answer is 8 KJ.

The nursing profession offers specialized care from infancy to death. Social, psychological, and economic issues are some of the challenges faced by minority nurses.

It is the nurse's responsibility to maintain continuity of care and develop a close closeness with the patient in order to foster trust and foster a climate that is safe for recovery. Numerous worldwide nursing codes of practice presently endorse patient advocacy.

Health promotion is promoted by nurses, who also teach patients and the general public how to avoid disease and damage, care for patients and help with treatment, take part in rehabilitation, and offer support. No other medical specialist has a job with such a wide-ranging and complex scope.

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Answer:

Explanation:

Given:

T = 1/10 s  -  Wave oscillation period

_____________________________

f - ?

The frequency of the wave:

f = 1 / T = 1 / (1/10) = 10 Hz

A tiger leaps horizontally from a 5.5 m rock with a speed of 3.6 m/s. So the tiger will land 2.772 m away from the base.

In mechanics, acceleration refers to how quickly an object's velocity alters in relation to time. The vectorized magnitude of accelerations. An object's acceleration is determined by the direction of the net force pushing against it.

Acceleration has a direction and a magnitude, making it a vector quantity. A vector quantity is a velocity as well. Acceleration is defined as the change in the vector of velocity over a period of time divided by the duration of the change.

According to the question, the given values are,

For y component :

Acceleration, a = -9.8 m/s²

Velocity, v₀= 0 m/s

Δy = -5.5 m

For x component :

a = 0 m/s²

v₀ = 3.6 m/s

Δy = v₀t + 1/2 at²

- 5.5 m = 0 + 1/2(-9.8)t²

t = 0.77 seconds

Δx = v₀t + 1/2 at²

Δx = (3.6)(0.77) + 0

Δx = 2.772 meters.

Hence, the tiger will land 2.772 m far from the base of the rock.

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The mean value of the measurements is 2.2 cm³.

The attributes of an object or an event are measured and quantified so that they can be compared to other things or events.

Therefore, measurement is the process of determining the size or smallness of a physical quantity in comparison to a primary reference quantity of a similar kind. The range and applications of measurement depend on the situation and industry.

Measurements do not apply to nominal attributes of things or occurrences in the natural sciences and engineering, as stated in the International Vocabulary of Metrology published by the International Bureau of Weights and Measures. Measurement is essential to trade, science, technology, and quantitative research in many fields.

Mean of the measurements = (2.1+2.1+2.4)/3 = 6.6/3 = 2.2 cm³.

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A 5 kg block is pulled with 3.5 N of force to the right. The block experiences 0.5 N of friction. The acceleration of the block will be 0.6 m/s^2.

According to Newton's second law of motion, force is calculated as mass times acceleration. Acceleration is the rate of change of velocity.

Here, the block is moved to right side by applying 3.5 N force. The block experienced a frictional force of 0.5 N. Then the total force is,

F_(net) = 3.5 N - 0.5 N = 3 N

The mass (m) of the block is 5 kg. The acceleration of the block will be

Acceleration (a) = Force/Mass

a = F_(net)/m

a = 3/5 = 0.6 m/s^2

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Its edges are subjected to a force of 2.8 x 1010 N at the specified shear stress and area.

The force known as shear stress is the tendency for a material to deform by slippage along a plane or planes parallel to the applied stress. Shear stress or pressures, as their name suggests, tend to "shear" objects or produce material deformation.

The formula for shear stress is given as:

F = Aτ

where;

F is the force applied, A is the area of the surface, and τ is the shear stress

We have,

Shear modulus, τ = 3.5 × 10¹⁰ Pa

The area of the plate is A = 0.8 m²

Then,

F = ( 0.8 m² ) × (3.5 × 10¹⁰ Pa)

F = 2.8 x 10¹⁰ N

As a result, as the shear stress grows, so does the force applied to each of its edges that causes the specified displacement.

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Earth's gravitational field = 10N/kg

Jupiter's gravitational field = 23.6 N/kg

Jupiter's gravitational field > Earth's gravitational field

Therefore, we will weigh more on Jupiter.

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distance between A and B25002 m

V = 100 km/h

V = (100 x 1000)/3600 = 27.78 m/s when converted to a unit of speed.

t = 15 minutes = 15 x 60 = 900 seconds

displacement =?

Displacement times time equals velocity

Velocity times time equals displacement

displacement = 27.78 x 900

Displacement = 25002 meters

The distance between A and B is 25002 meters since displacement and distance are measured in the same unit.

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The net force's work is described as d=(3.82)(4.00)=15.3J for W=F net, where we made use of the fact that the canister began at rest and traveled horizontally while being affected by horizontal forces; the resulting effect is represented by the symbol F net.

Since all of these cases are in closed systems, the result is in a new preserved quantity.

Linear momentum and this new quantity, angular momentum, are comparable. In this chapter, we first define angular momentum and then examine it from a number of angles.

But first, we look into a single particle's angular momentum. This enables us to compute the force angular momentum of a rigid cylindrically symmetric body and a system of particles.

We used the fact that the canister started at rest and moved horizontally under the influence of horizontal forces; the ensuing effect is denoted by the symbol F (force) net.

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Adding bulbs into a series will make them dimmer because the current is decreased, adding bulbs to a parallel will not affect the brightness because the current through each individual bulb remains the same.

Therefore, Option (C) is correct.

A series circuit is one where the same current flows through all the components in the circuit. The current has only one path in series circuits. A parallel circuit is one where the electric current has multiple paths to flow through. The components of the parallel circuits will have the same voltage across all ends.

When we connect bulbs in the circuit where all are connected in series then the net resistance of the circuit will increase and the voltage across each bulb will decrease.

Since voltage decreases across each bulb then the current across each bulb will decrease and the bulb gets dimmer because the current is reduced.

When we connect bulbs in parallel the voltage and current across each bulb will remain the same and then adding bulbs to a parallel will not affect the brightness.

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The velocity of penguin as he ends where he started was 0 m/s.

Displacement is the length of straight line joining the initial and final position of the body.

Given is a penguin who waddled 8 m uphill before sliding back down to its friends in 2 seconds.

We know that the velocity is the rate of change of displacement with respect to time. Mathematically -

v = dx/dt

dx = v dt

∫dx = ∫v dt

Δx = vΔt

v = Δx/Δt

Now, the displacement of the penguin will be = Δx = 8 - 8 = 0

Then, its velocity will be -

v = 0/Δt = 0

Therefore, the velocity of penguin as he ends where he started was 0 m/s.

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Of the two possible angles, the smaller angle is θ = 17.075°.

The distance between a projectile's launch point and its point of impact with the ground, assuming it is fired from the ground, is referred to as the range.

R = [u²sin (2θ)]/g

Given values;

Range of pass; R = 8.25  m

Speed; u = 12 m/s

R = [u²sin (2θ)]/g

Thus;

8.25  = 12² × (sin(2θ))/9.8

(sin(2θ)) = ( 8.25 × 9.8)/12²

(sin(2θ)) = 0.5614

2θ = sin⁻¹(0.5614)

2θ = 34.15

θ =34.15/2

θ = 17.075°

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Answer:

130.073 pounds

Explanation:

use a translation to find what kg to pounds is

Answer:

578.59235

Explanation:

59*9.8

9.8 is the force of gravity acting on the earth, therefore multiplying 59 and 9.8, you get 578.59N or, if you're rounding it up, 578.6N

40 V

Explanation

Electric potential at any point inside a hollow metallic sphere is constant. Therefore, if potential at surface is 40 V, potential at centre will also be 40 V.

40V

also In a hollow sphere, with the charge on the surface of spheres, there is no charge enclosed within the sphere, since all the charges are in surface. Hence there is no electric field within the sphere.

I hope this helps you

If two balls the same size and different masses go down a ramp, they will move at the same speed.

The phrase "rolling down a frictionless slope" is illogical. The translational and rotational motions of the balls are completely uncoupled if the slope has no friction, and the balls just slide down the slope.

I believe the situation when there is static friction, allowing the balls to roll without slipping, is what you are most interested in.

In either case, the velocity as a function of distance along the ramp (v(s)) for uniform spheres ends up being independent of both the mass and the radius. Additionally, the duration of the descent is simply the integral of ds/v(s), which is also independent of the mass and radius.

As a result, they move at the same speed regardless of position and arrive at the bottom at the same moment.

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Newton's second law states that the product of the box's mass and acceleration determines the net force acting on the object. T, which equals f= 23.52 N, must be applied in order to move up the ramp.

The behaviour of objects for which all external forces are balanced is predicted by Newton's first law of motion. According to the first law, sometimes known as the law of inertia, an object's acceleration will be zero metres per second per second if the forces acting on it are evenly distributed. When everything is in balance, or equilibrium, objects cannot accelerate. According to Newton, an item will only accelerate if another force is operating on it that is net or imbalanced. If an imbalanced force is present, the object will accelerate and change its direction and speed, or both. The behaviour of objects for whom all external forces are not balanced is covered by Newton's second law of motion.

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Answer:

If the resistors are in series then each resistor

carries the "same current" - the first option

if the digital display on a thermometer reads 0110 1100 and the temperature ranges from -100 to 300 degrees (8 bit). the analogue quantity being measured is 84.71.

A thermometer is a device used to gauge temperature. It may gauge the temperature of a solid substance, like food, a liquid substance, like water, or a gas, like air. Celsius, Fahrenheit, and kelvin are the three most widely used units for measuring temperature. A component of the metric system is the Celsius scale. The metric system of measuring also contains units for length and mass, such as kilogrammes and kilometres. The official unit of measurement for practically all nations in the world is the metric system, which includes Celsius. The Celsius scale is commonly used in science to measure temperature. Water has a freezing point of 0 degrees Celsius and a boiling point of 100 degrees Celsius.

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his average momentum along the straight-line path id 981.21kgm/s

What is momentum ?

momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction. According to Isaac Newton's second equation of motion, the force applied on a particle is equal to the time rate of change of momentum.

According to Newton's second law, if a particle is subjected to a constant force for a specific amount of time, the result of the force and time (referred to as the impulse) is equal to the change in momentum. On the other hand, a particle's momentum represents the length of time needed for a consistent force to bring it to rest.

Average velocity,

v = distance / time

= 100 m / 9.58 s

= 10.44 m/s

Now use:

momentum = m*v

= 94 Kg * 10.44 m/s

= 981.21 Kg m/s

Answer: 981.21 Kg m/s

his average momentum along the straight-line path id 981.21kgm/s

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Answer:

Choice d: support force (normal force) on the cat and the weight of the cat are equal in magnitude.

Explanation:

The cat in this question is stationary. As a result, the acceleration of this cat will be zero. By Newton's Second Law of Motion, the net force on this cat will also be zero.

If the floor is level, there will be two forces acting on this cat:

For the net force to be zero, these two forces need to balance each other. For that, they need to have the same magnitude and point in opposite directions. Therefore, the magnitude of the support force (normal force) will be equal to the magnitude of the weight of this cat.

Answer: 46 min

Explanation:

What is acceleration ?

Acceleration is the rate at which the speed and direction of a moving object change over time. Something is said to be accelerating when it starts to move faster or slower

Let acceleration be a

For the hanging m, mg-T = ma

For the glider(mass M),T=Ma

Eliminating T,we get

mg-Ma=ma

a=mg/(m+M)

Using energy concept we will get the same result,

When m is lowered by h, M will move h distance in forward direction.

As there is no friction, both m and M will attain same speed (v).

So, mgh = 1/2(m+M)v2 [Word done by T will cancel out, as for m it is -hT while for M it is hT(see the direction of T and displacement in both cases)]

v2 =2mgh/(m+M)

Use formula v2 - u2 = 2as

2mgh/(m+M) - 0 =2ah

a = mg/(m+M)

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Answer:

Explanation:

Given:

U =12 V

E = 60 J

________

q - ?

E = U·I·t

q = I·t

E = U·q

q = E / U = 60 / 12 = 5 С

Two cars, each having a mass of 1,000 kg are being tested at the Department of Highway Safety facility. Car A is moving at 30 m/s to the north. Car B is moving at 15 m/s to the south. When they collide a- Car A applies a greater force on car B than car B applies on car A.

Momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle.

When both the cars will collide , one with greater momentum will applies greater force .

As momentum is calculated  as mass multiplied by velocity , since both the car have same mass then the car with a greater velocity will exert more force on the other car .

since , car A has a velocity of 30 m/s and car B is moving with a velocity of 15 m/s , then car A will have greater momentum and will exert  a greater force on car B.

correct option will be

a- Car A applies a greater force on car B than car B applies on car A.

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If a 0.12-kg apple falls off a tree branch that is 2.3 m above the thick grass. The apple sinks 0.067 m into the grass while stopping, then the average contact force that grass would exert on the apple would be 1.177 Newtons.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

As given in the problem if a 0.12-kg apple falls off a tree branch that is 2.3 m above the thick grass. The apple sinks 0.067 m into the grass while stopping,

The contact force on the apple = 0.12 × 9.81

                                                    = 1.177 Newtons

Thus, the average contact force that grass would exert on the apple would be 1.177 Newtons.

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The temperature of the box and floor eventually rise as a result of the thermal energy flowing as heat inside these two things.

This is further explained below.

Generally, The energy present in a system that determines its temperature is referred to as thermal energy.

Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is performed in the process (see the first law of thermodynamics).

In conclusion, This thermal energy is transferred in the form of heat throughout the box as well as the floor, which eventually results in an increase in temperature for both of these locations.

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