Answers
Answer:
Apparently, it takes 3 * 5E-3 sec to travel from D to G
The distance is given as .68 m
V = S / t = .68 m / (3 * 5E-3 s) = 45 m/s
Related Questions
what is the conclusion of a simple pendulum experiment
Answers
The surprising conclusion - the pendulum traverses a longer distance in a shorter time, than in a shorter distance, and its period is shorter.
The term "force" has a specific meaning in science. At this level, it is quite acceptable to refer to a force as a push or a pull. A force is not something that an object 'has in it.' Another object applies a force to another. The concept of a force is not limited to living or nonliving things.
The goal of this experiment is to quantify gravity's acceleration using a physical pendulum. A basic pendulum is described as a point mass connected to a massless unstretchable string connected to a rigid support. Mechanical energy is conserved in a simple pendulum with no friction. Total mechanical energy is the sum of kinetic and gravitational potential energy. There is a continual interchange of kinetic energy and gravitational potential energy as the pendulum swings back and forth.
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You hold a 0.125 kg glider A and a 0.500 kg glider B at rest on an air track with a compressed spring of negligible mass between them. When you release the gliders, the spring pushes them apart so that they move in opposite directions. When glider A has moved 0.960 m to the left from its starting position, how far to the right from its starting position has glider B moved?
Answers
Answer:
Magnitude |VB| = 0.32 m/s
and
Direction is to the left.
Explanation:
given data
glider A mass = 0.125 kg
glider B mass = 0.500 kg
glider A move = 0.960 m to the left
solution
we use here Conservation of momentum that is
M1 × U1 + M2 × U2 =M1 × V1 + M2 × V2 ........................1
put here value and we get
0.125 × 0 + 0.500 × 0 = 0.125 × 0.960 + 0.375 × VB
VB = −0.32 m/s
Magnitude |VB| = 0.32 m/s
and
Direction is to the left.
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two vehicle are moving in same direction the first one has velocity of 24m/s another has 18m/s find their relative velocity & also their relative velocity when they are moving in opposite direction
Answers
The relative velocity of two vehicles moving in the same direction will be 42 m/s, whereas the relative velocity of two vehicles moving in different directions will be 8 m/s.
Let the velocities of the two vehicles be, v1 and v2, respectively.
Given,
The velocity of the first vehicle (v1) = 24 m/s
The velocity of the second vehicle (v2) = 18 m/s
Case-1
When they are moving in a same direction,
The relative velocity (V) of the two vehicles will be the sum of their velocities, i.e.,
V = v1 + v2
=> V = 24 + 18
=> V = 42 m/s.
Case-2
When the vehicles are moving in different directions,
The relative velocity (V) of the two vehicles will be the difference between the velocities, i.e.,
V = v1 - v2
=> V = 24 - 18
=> V = 6 m/s.
Therefore, The relative velocity of two vehicles moving in the same direction will be 42 m/s, whereas the relative velocity of two vehicles moving in different directions will be 8 m/s.
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During a thunderstorm, why do you see the lightning before you hear the thunder?
Answers
Answer:
light travel faster than sound
Explanation:
because light, travels at about 300,000,000 meters per second, travels much faster than sound, which travels at 340 meters per second
explain ray of light and beam of light with the help of a diagram each
Answers
A ray of light is a segment of light that is moving in a single direction along a straight path. A beam of light is a collection of light rays that emanates from a single source.
A light beam might be parallel, convergent, or divergent. A parallel beam is formed when the beams from a distant light source, such the sun, are perpendicular to one another. In a convergent beam, the rays proceed towards a point. The rays in a divergent beam move away from a point.Light sources can be divided into two categories: Luminescence and Incandescence.A ray of light is the direction or route that light energy follows as it moves through a material. An arrow is drawn on a straight line to indicate it.To know more about light
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A 15 kg dog running at 4 m/s picks up a 1 kg stationary bone and continues to run what is the speed of the dog as it runs with its newfound treasure?
0
2.5
3.75
5.83
A bouncy ball has 30 J of kinetic energy before it collides with the floor. If the collision is perfectly elastic, what is the kinetic energy of the bouncy ball after it collides with the floor?
0
30
65
200
Answers
Answer: (1) C, (2) B
Explanation: I took the test, but to solve question 1 use the inelastic collision formula m1v1+m2v2 = (m1+m2)v2 to get the answer. Question 2 is b because it states that the ball is perfectly elastic as it collides with the floor. A perfectly elastic collision is when objects collide and no net energy is lost, hence the bouncy ball still has 30 J worth of kinetic energy.
The speed of the dog as it runs with its newfound treasure is 3.75 m/sec.
The kinetic energy of the bouncy ball after it collides with floor is 30 J.
What is speed?The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.
According to the given in question,
a.) Using inelastic collision formula
[tex]m_1v_1+m_2v_2 = (m_1+m_2)v_2[/tex]
[tex]v_2[/tex] = 60/16 m/sec = 3.75 m/sec
b.) Because it states that the ball is perfectly elastic as it collides with the floor. A perfectly elastic collision is when objects collide and no net energy is lost, hence the bouncy ball still has 30 J worth of kinetic energy.
The speed of the dog as it runs with its newfound treasure is 3.75 m/sec.
The kinetic energy of the bouncy ball after it collides with floor is 30 J.
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You do 13 J of work as you lift a 35-N pail of water. Through what height did you lift the pail?
Answers
Height to which the lift of the pail is taken is 0.37m.
Height is the vertical distance of an object from the surface of the Earth.
Work done = 13 J
Weight of the pail of the water = 35-N
Gravity is defined as the force that attracts a body to the Earth or any other physical body that has mass.
The acceleration due to gravity is denoted by 'g' which has the value of 9.81 [tex]m/s^{2}[/tex].Work done by gravity = mghW = mgh
mg = 13 J
W = 35 N
h = [tex]\frac{W}{mg}[/tex]
h = [tex]\frac{13}{35}[/tex]
h = 0.37 m
The height to which the lift of pail will be raised will be 0.37m.
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A star has right ascension of 3 hours. Which of these statements is correct about the star?
It is 3 hours north of the celestial equator.
It is 3 hours south of the celestial equator.
It is 3 hours to the east of zero hours right ascension.
It is 3 hours to the west of zero hours right ascension.
Answers
The correct statement about the right ascension is "it is 3 hours to the east of zero hours right ascension.
option C is the correct answer
What is right ascension of stars?The right ascension of stars is the astronomical equivalent of longitude.
Right ascension is also the angular distance of the star measured eastward from the first point of Aries, also called the Vernal Equinox.
In other words, the right ascension describes how far a star is displaced from a given point towards the eastward direction along the longitude.
Lines of longitude runs from east to west. But the right ascension runs towards the east.
Thus, the correct statement describing the right ascension would measure it towards the east.
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The mass of a planet is 10¹⁸ kg and its radius is 10³ m. Calculate the acceleration due to gravity on its surface. Use the known value of G. [6.673×10^-11 N m² kg^-2]
Answers
[tex]g = \frac{GM}{r {}^{2} } \\ g = \frac{6.673 \times 10 {}^{ - 11} \times 10 {}^{18} }{(10 {}^{3}) {}^{2} } \\ g = \frac{6.673 \times 10 {}^{7} }{10 {}^{6} } \\ g = 6.673 \times 10 \\ g = 66.73 \: m.s {}^{ - 2} [/tex]
I have three energy levels, with 10 electrons in my outer energy level. What am I?
Answers
I have three energy levels, with 10 electrons in my outer energy level. I am calcium.
What are energy levels?Energy levels refer to the regions around an atom where electrons can be found.
The energy levels are given by the principal quantum number, n.
Electrons in an atom are arranged in energy levels.
An atom that has three energy levels belong to period 3 of the periodic table.
The outermost energy level for an atom that has three energy levels is energy level 3.
The atom that has 10 electrons in the outermost energy level of 3 will have 10 + 8 + 2 electrons = 20 electrons.
The element is calcium.
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A car of mass 500 kg is moving at a speed of 1.2m/s. A man pushes the car increasing the speed to 2 m/s. How much work did the man do
Answers
Answer:
Work:
A = 640 J
Explanation:
Given:
m = 500 kg
V₁ = 1.2 m/s
V₂ = 2.0 m/s
____________
A - ?
The work is equal to the change in the kinetic energy of the car:
A = Δ Wk
A = m·V₂² / 2 - m·V₁² / 2
A = (m/2)·(V₂² - V₁²)
A = (500/2)·(2² - 1.2²) = 640 J
The diagram shows object N placed one on top of object M. M has a mass of 4 kg and N has a mass of 2 kg. Assume that all the contact surfaces are frictionless, what is the acceleration of N when M is
pulled by a force of 20 N?
A. 0 m/s²
B. 4 m/s²
C. 3.3 m/s²
D. 10 m/s²
Answers
If N placed one of these on top of item M, the acceleration when M is dragged by a force od 20 N is 10 m/s. N weighs 2 kg, but M is 4 kg in weight.
The correct answer is D
What happens during acceleration?Acceleration is the rate at which the direction and speed of a moving object change over time. Anything is said to be accelerated when it goes straighter and faster or slower. Therefore, even though the speed is constant, travel on a circle increases due to the constant change in direction.
Is a gradual incline good?Slow acceleration can be dangerous as well as unpleasant, especially when entering a busy state road when you must accelerate rapidly to avoid being rear-ended. When you are moving slowly up a slope while driving, acceleration can sometimes be a hassle.
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A moving object is moving with a speed of 20m/s on the line y=√3x +1. How many meters does it move in the x direction in 3 seconds?
how can i solve it?
Answers
2077 m distance it move in the x direction in 3 seconds
speed=distance/time
distance=speed × time
distance= 20×3
√3x +1=60
x=119
put x's value in equation
distance= 2077 m
Distance, which is independent of direction, is the length between two points or things. Distance solely considers the overall magnitude and disregards the start and finish places because it is a scalar attribute. Distance can only have a positive or zero value because it is a scalar attribute; it cannot be negative.
The meter (m) is the most widely used unit of measurement for distance, however kilometers (km) can also be used to describe longer distances and centimeters (cm) or millimeters can be used to express shorter distances (mm). The distance traveled is frequently represented by the letter D when computing distance.
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Find the y-component of this
vector:
47.3 m
39.4°
Answers
Answer: 36.55
Explanation:
Answer:it is 30.03
Explanation:
An object with a mass of 7 kg accelerates 8 m/s2 when an unknown force is applied to it. What is the amount of the force?
Answers
The amount of force applied to the 7kg object that caused it to accelerate at 8m/s² is 56 newtons.
What is the force applied to the object?A force is simply a push or a pull of an object resulting from the object's interaction with another object.
From newton's second law;
Force = mass × acceleration
Given the data in the question;
Mass of the object = 7kgAcceleration = 8m/s²Applied force = ?Plug the given values into the formula to determine the applied force.
Force = mass × acceleration
Force = 7kg × 8m/s²
Force = 56kgm/s²
Force = 56 N
Therefore, the applied force is 56 newtons.
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