Answer:
amplitude
frequency
wave
transition
transverse waves
Nearby jet airplane
Fast train
Siren
Lawn move
A circus performer juggling while standing on a tightrope suspended 18.0 m above the ground tosses a sword directly upward into the air with a speed of 5.0 m/s. If the sword leaves his hand 1.0 m above the tightrope, what is the sword's maximum height above the ground?
Answer:
Explanation:
let's use kinematics to solve for max height above the hand.
At the top of its arc, the sword has zero vertical velocity.
v² = u² + 2as
s = (v² - u²)/2a
s = (0² - 5.0²) / (2(-9.8))
s = 1.2755...m
call it 1.3 m
to this we must adjust for the height of the hand at release which is
18.0 + 1.0 = 19.0 m above ground
19.0 + 1.3 = 20.3 m above ground
The number of hours you spent studying each day
during the past week
A block having a mass of m = 19.5 kg is suspended via two cables as shown in the figure. The angles shown in the figure are as follows: α = 17° and β = 27°. find the numeric value of the T1 and T2 in new ton?
The equilibrium condition allows finding the result for the tensions of the cables that support the block are:
T₁ = 245.1 N and T₂ = 263.1 N
Newton's second law establishes a relationship between the net force, the mass and the acceleration of the bodies, in the special case that the acceleration is zero is called the equilibrium condition.
∑ F = 0
Where F is the force.
A free body diagram is a diagram of the forces without the details of the bodies, in the attachment we can see a free body diagram of the system.
Let's write the equilibrium condition for each axis.
x-axis
T₂ₓ - T₁ₓ = 0
T₂ₓ = T₁ₓ
y-axis
[tex]T_{1y} + T_{2y} - W =0[/tex]
We use trigonometry to find the components of stress.
cos 17 = [tex]\frac{T_{1x}}{T_1}[/tex]
sin17 = [tex]\frac{T_{1y}}{T_1y}[/tex]
T₁ₓ = T₁ cos 17
[tex]T_1_y[/tex] = T₁ sin 17
cos 27 = [tex]\frac{T_2_x}{T_2}[/tex]
sin27 = [tex]\frac{T_2_y}{T_2}[/tex]
T₂ₓ = T₂ cos 27
[tex]T_{2y}[/tex] = T₂ sin 27
We substitute.
T₂ cos 27 = T₁ cos 17
T₂ sin27 + T₁ sin17 = W
We solve the system.
[tex]T_1 \frac{cos 17 \ sin 27}{cos 27} + T_1 sin 17 = m g \\T_1 ( tan 27 cos 17 + sin 17) = 19.5 \ 9.8[/tex]
T₁ (0.7796) = 191.1
T₁ = 245.1 N
We look for the T₂ tension.
T₂ = [tex]T_1 \ \frac{cos 17 }{cos 27}[/tex]
T₂ = 245.1 [tex]\frac{cos 17}{ cos 27}[/tex]
T₂ = 263.1 N
In conclusion, using the equilibrium condition we can find the result for the tensions of the cables that the block supports are:
T₁ = 245.1 N and T₁ = 263.1 N
Learn more here: brainly.com/question/19403002
What are two factors that determine
object's gravitational potential energy?
an
Answer:
The factors that affect an object's gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in.
Which form of energy is used in a wind-up toy robot?
A- Chemical energy
B-Electrical energy
C-Heat energy
D-Mechanical Energy
Answer:
D. MECHANICAL ENERGY
SANA MAKA TULONG
Answer:
the answer is D
Explanation:
because I know it is D
1*2+2+1+5 by how much?
Answer:
10
Explanation:
1*2+2+1+5=10
1x2+2+1+5=10
What is the slope of the line plotted below?
O A. -1
O B. 2
o
C. 2.
O D. 1
Answer:
-2
Explanation:
The points are (0, 3) and (3, -3)
If you subtract 3-(-3) you get 6
If you subtract 0-3 you get -3
6/-3 is equal to -2
If Bill threw a ball straight up on the Moon (g=1.6 m/s2) with a starting velocity of 22m/s from a cliff and it fell past him and reached a velocity of 56m/s as it impacted the Moon’s surface below the cliff, how long was the flight time?
Answer:
Write two important of physical state
Jacob works in a store that sells jeans. Jacob is stacking a new delivery of jeans to display on top of the old jeans so that they are touching. In Stack 1, the top pair of jeans is larger than the bottom pair. In Stack 2, both pairs of jeans are the same size as the bottom pair in Stack 1. What does the different amount of energy mean for the temperature of all four pairs of jeans, and how will the two top pairs of jeans compare in temperature after a while? Why?
jacob first stack is 1
Answer:
help
Explanation:
me
A parallel plate air capacitor of value C, is charged to a potential V, between
the plates and +9, is charge on one plate. Separation between plates is d. A
dielectric of dielectric constant K = 3 fills the space between the plates. Which
of these quantities will change and why. (i) capacitance (ii) charge (iii) po-
tential difference and (iv) field density?
Answer:
(i) C=3Co
(ii) V=Vo/3
(iii) Decrease
Explanation:
(i) capacitance increase K times.
(ii) As charge remain constant so by using Q=CV
you will get potential decrease by K time.
(iii) Decrease due to induced electric field inside
dielectric material..
E=Eo-Eind
Explanation:
heyaaa hope it helps ☺️✌️
I WILL MAKE BRAINLIEST, if any scamed I will Report him.
The weight of an object is 5 N. At a certain instant, its momentum is 6 kg m/s-¹ . Due to a force applied in the direction opposite of motion. the velocity is of the object decreased to 4 m/s-¹ during 4s. What is the force exerted on the object ?
A 100g object falls 5 meters. How fast do you determine it is moving when it hits the ground?
Answer:
Approximately [tex]9.9\; \rm m\cdot s^{-1}[/tex], assuming that this object started from rest, [tex]g = 9.81\; \rm m \cdot s^{-2}[/tex], and that air resistance on this object is negligible.
Explanation:
If the effect of drag on this object is negligible, the acceleration of this object would be constantly equal to [tex]g[/tex], the gravitational field strength ([tex]g \approx 9.81\; \rm m\cdot s^{-2}[/tex] near the surface of the earth.)
Since acceleration is constant, it would be possible to find the final velocity of this object using SUVAT equations.
Let [tex]v[/tex] and [tex]u[/tex] denote the final and initial velocity of this object, respectively. Under the assumption that this object started from rest, [tex]u = 0\; \rm m \cdot s^{-1}[/tex].Let [tex]a[/tex] denote the acceleration of this object. Under the assumptions above, [tex]a = g = 9.81\; \rm m\cdot s^{-2}[/tex].Let [tex]x[/tex] denote the displacement of this object. In this question, [tex]x = 5\; \rm m[/tex].The following SUVAT equation would apply:
[tex]v^{2} - u^{2} = 2\, a\, x[/tex].
Rearrange to find an expression for [tex]v[/tex]:
[tex]\begin{aligned}v^{2} &= 2\, a\, x + u^{2}\end{aligned}[/tex].
[tex]\begin{aligned}v &= \sqrt{2\, a\, x + u^{2}}\end{aligned}[/tex].
Substitute in the values [tex]u = 0\; \rm m\cdot s^{-1}[/tex], [tex]a = 9.81\; \rm m\cdot s^{-2}[/tex], and [tex]x = 5\; \rm m[/tex]. Evaluate the expression to find the value of [tex]v[/tex]:
[tex]\begin{aligned}v &= \sqrt{2\, a\, x + u^{2}} \\ &= \sqrt{2 \times 9.81\; \rm m\cdot s^{-2} \times 5\; \rm m} \\ &\approx 9.9\; \rm m\cdot s^{-1}\end{aligned}[/tex].
Therefore, under these assumptions, the velocity of this object would be approximately [tex]9.9\; \rm m\cdot s^{-1}[/tex] right before it hits the ground.
A 200 kg object is pulled up a rough incline plane as shown in the picture above. The object accelerates at 1 m/s^2. Calculate the tension on the rope.
A. 1,136 N
B. 2,203 N
C. 712 N
D. 957 N
Answer:
Explanation:
μ = 0.05 is hardly a "rough surface", More like very slick ice. But OK
Forces acting parallel to the ramp with UP RAMP being positive direction.
F = ma
Tension minus weight minus friction will equal mass acceleration
T - mgsinθ - μmgcosθ = ma
T = m(a + g(sinθ + μcosθ))
T = 200(1 + 9.8(sin25 + 0.05cos25))
T = 1,117.14995
Which is closest to answer A.
Understand that answer precision to 3 or 4 significant digits as exampled by our solution options CANNOT be justified by input numbers with only a single significant digit as in this question.
In fact, we cannot get the 1136 N result unless we also use gravity to a single significant digit of 10 m/s²
How can you determine the number of protons or electrons in an atom?
Answer:
number of protons = atomic number
number of electrons = atomic number
An atom of an element loses one proton and one electron. Which statement describes the result of this event?
A positive ion of the same element is formed.
B.neutral atom of the element's isotope is formed.
C.positive ion of a new element is formed.
D.neutral atom of a new element is formed.
Answer:
A.
Explanation:
hope it help,tnx sa points
Is this equation balanced? 2HCl + CaCO3 → CaCl2 + H2O + CO2
Answer:
Yes it is
Explanation:
the sum moles at the left side equals the sum of moles at the right side
Brainilist If you solve these correctly!
20 points!!!
Answer:
To convert from denary to binary, start by subtracting the biggest place value you can from the denary number, then place a 1 in that place value column. Next, subtract the second biggest place value you can, and place a 1 in the column. Repeat this process until you reach zero.
if we assume that between birth and 2.5 y of age a child uses 3 diapers per day estimate total number of disposable diapers used per year in the us
Answer:4.38 X 10^10 diapers.
Explanation:
[3 diapers / 1day] X [365 day / year] X 1 year X 40million (rough guess of 1-2.5 year olds) = 4.38 X 10^10 diapers.
if we assume that between birth and 2.5 y of age a child uses 3 diapers per day then the total number of disposable diapers used per year in us would be 1095 diapers
What is multiplication?Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis.
as given in the problem if we assume that between birth and 2.5 y of age a child uses 3 diapers per day
The number of diapers used in a day = 3
as there are 365 days in a year
The total number of diapers used in a year = 3×365
The total number of diapers used in a year = 1095 diapers
Thus, The total number of disposable diapers used in the United States each year would be 1095 diapers if we assume that a child uses 3 diapers per day between birth and 2.5 years of age.
Learn more about multiplication here,
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Đồ thị hình vẽ biểu diễn sự biến thiên tốc độ của một vật chuyển động thẳng theo thời gian, biết góc = 300. Nếu khối lượng của vật là 20 kg thì hợp lực tác dụng vào vật có độ lớn là bao nhiêu ?
Cho e xin câu trả lời được không ạ?
2. A train is traveling at 75 km/hour. How far can it travel in 20 hours?
3355400 Miles I highly doubt this though sorry
Identify the energy transformations for a gas fire
Answer:
The release of energy from fuels is used to make other forms of energy. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat. The heat is converted into mechanical energy. The mechanical energy moves the car.
A parasitic plant with yellow, slender and branched stem is called.....
Explanation:
A parasitic plant with yellow, slender and branched stem is called Cuscuta (Amarbel).
hope this helps you.
what is so2..........
Answer:
so2 is Sulfur dioxide.
Which statements are part of the safety protocol for this lab experiment? Check all that apply:
✓ Always wear a lab coat and safety goggles when performing an experiment
X Use caution when freezing fluids as they may expand
✓ Use the right gear, such as tongs and thermal mitts, to handle hot objects
✓ Check glassware, such as beakers and flasks, for cracks and chips prior to use
X Ear protection should be worn to protect against the loud noises associated with heat transfer
Answer:
Always wear a lab coat and safety goggles when performing an experiment
✓ Behavior in the lab needs to be purposeful. Exercise caution when using the hot plate, as it can cause burns.
X Ice used in this lab can melt quickly. Be sure to insulate your containers.
✓ Label your glassware and paper cups clearly and appropriately. Many chemicals appear to be the same.
✓ Check glassware, such as beakers and test tubes, for cracks and chips prior to use.
X A fume hood should be used to collect any potentially harmful vapors.
✓ Wear the right gear, such as chemically resistant gloves and oven mitts, when performing the experiment.
A, C, D, F
thermometer is preferred fir very cold region give reason
Answer:
alcohol thermometer is preferred for a very cold region. Alcohol thermometer is preferred for a very cold region because its freezing point of alcohol is - 117°C. So, it can measure the temperature of the very cold region.
A product of photosynthesis which is a reactant in cellular respiration?
NADPH
Water
Carbohydrate
Answer:
A
Explanation:
water released then sunlight splits it into oxygen and hydrogen ions
A ball rolls horizontally off an incline, at velocity of 8.00m/s l. If the incline is 3.50m above the ground below determine:
a) how long is the projectile in the air?
B) what is the range of the projectile?
C) what is the x-component of velocity at t= 0. 21s
d) y- component of velocity at t-0.21s
e) what is net velocity at t= 0.21s
Answer:
sadsadasadsdassda
Which of the following actions will keep the gravitational force between two objects unchanged?
Decreasing the mass of the objects
Increasing the temperature of the objects
Increasing the distance between the objects
Decreasing the distance between the objects
Answer:
increasing the temperature of the object
You are riding a jet ski at 75 m/s and notice something in the water ahead of you. It takes you 10
seconds to slow down and come to a stop(0 m/s). What was your average acceleration?
Plz help!!!
Answer:
Im pretty sure its 7.5
Explanation:
your initial ( starting) velocity was 75. Your final velocity was 0. 75 / 0 = 0 m/s.
BUT you are calculating your acceleration, so it would be 75 - 0 divided by 10 = 7.5
A 6.8 KG object moves with a velocity of 8 M/S what’s it's kinetic energy?
Answer:
Explanation:
KE = ½mv² = ½(6.8)8² = 217.6 J
round as appropriate because that result is way too much precision for the inputs provided. Arguably should be 200 J based on the single significant digit of the velocity.