SNIIX18
 Name:
 Alejandra alvarez
 School:
 Centro studi idea verona
 About:
 Io amo la scuola a volte ( i love school sometimes)
Most Active Subjects

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Questions Asked

SNIIX18:
Group Title
What is the restoring force of a spring with a spring constant of 4a and a stretched displacement of 3b?
A)7 ab (B)7 a/b (C)12 ab (D)12…
 updated one year ago
 6 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
In Hooke's law, what does k represent?
A)the length of the spring (B)the mass of the spring (C)the stiffness of the spring (D)the thickness…
 updated one year ago
 3 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
The impact time for a particular collision is 3.0x10^3 seconds and the impulse in the collision is 0.30 newton seconds. What is the force o…
 updated one year ago
 5 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
A spacecraft's landing is cushioned by air bags. As it lands on Mars, the velocity of downward fall is 20 meters/second. Immediately after i…
 updated one year ago
 8 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
Which of the following statements is true in the case of a collision?
A)Increased impact time will increase the impact force.
(B)Reduced i…
 updated one year ago
 3 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
Which of theses values is equivalent to the change in momentum of an object?
(A)Impulse (B)acceleration (C)force (D)velocity
 updated one year ago
 5 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
A stone of mass 0.55 kilograms is released and falls to the ground. Measurements show that the stone has a kinetic energy of 9.8 joules at t…
 updated one year ago
 6 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
Two college teams, A and B, are playing a game of tug of war. Team A applies a force of 103 newton's, but the rope does not move in any dire…
 updated one year ago
 9 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
Which equation would you use to find the statistical definition of entropy?
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
A heat engine has a hot reservoir of 490°C and a cold reservoir of 210°C. What is the efficiency of the engine?
A. 62.3% B. 52.6% C. 57…
 updated one year ago
 7 replies
 2 Medals
Mathematics

SNIIX18:
Group Title
If a running system has a total change in the heat of 437 joules, and it is running at a temperature of 321 K. What is the entropy?
A. 0.…
 updated one year ago
 2 replies
 2 Medals
Mathematics

SNIIX18:
Group Title
What is latent heat?
A. energy released or absorbed to change the kinetic energy of a substance
…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

SNIIX18:
Group Title
How do we calculate the restoring force according to Hooke's law?
A. spring constant × displacement
B. velocity × mass
…
 updated one year ago
 16 replies
 2 Medals
Mathematics

SNIIX18:
Group Title
How do the tension of the cord and the force of gravity affect a pendulum?
A. They are the competing forces that act on a pendulum as it sw…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

SNIIX18:
Group Title
What do the length of the cord and gravity determine for a pendulum?
A. velocity B. amplitude C. period D. speed
 updated one year ago
 13 replies
 2 Medals
Mathematics

SNIIX18:
Group Title
Imagine that you are on Mars, and you are swinging a pocket watch back and forth. You time the period of this simple pendulum to be 2.6 seco…
 updated one year ago
 3 replies
 3 Medals
Mathematics

SNIIX18:
Group Title
Imagine that you are swinging back and forth a chain with a locket on the end. Assuming that you are on Earth so that gravity is constant at…
 updated one year ago
 16 replies
 2 Medals
Mathematics

SNIIX18:
Group Title
Which statement is true?
A. Kepler’s laws apply only to the motion of Earth. …
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
What is the centripetal force of an object undergoing uniform circular motion when its radius is doubled and its speed remains constant?
…
 updated one year ago
 1 reply
 1 Medal
Mathematics

SNIIX18:
Group Title
What is the radius of a communications satellite’s orbital path that is in a uniform circular orbit around Earth and has a period of exactly…
 updated one year ago
 16 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
George pushes a wheelbarrow for a distance of 12 meters at a constant speed for 35 seconds by applying a force of 20 newtons. What is the …
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
Which statement describes the speed of a planet traveling in an elliptical orbit around the Sun?
A. The speed is constant.
…
 updated one year ago
 5 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
George pushes a wheelbarrow for a distance of 12 meters at a constant speed for 35 seconds by applying a force of 20 newtons. What is the po…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
The magnitude of the force involved in a certain collision (measured in newtons) is equal to the change in momentum (measured in kilogram me…
 updated one year ago
 No Medals Yet
Mathematics

SNIIX18:
Group Title
Determine the value of impulse from this graph of momentum vs. time.
A. 9 newton seconds …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

SNIIX18:
Group Title
In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy…
 updated one year ago
 5 replies
 2 Medals
Mathematics

SNIIX18:
Group Title
A 0.50 kilogram ball is held at a height of 20 meters. What is the kinetic energy of the ball when it reaches halfway after being released?
…
 updated one year ago
 9 replies
 1 Medal
Mathematics

SNIIX18:
Group Title
Ball A has a mass of 0.200 kilograms. Ball A, traveling at a velocity of 2 meters/second in the +x direction, hits a stationary ball B of th…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

SNIIX18:
Group Title
Ball A has a mass of 0.200 kilograms. Ball A, traveling at a velocity of 2 meters/second in the +x direction, hits a stationary ball B of th…
 updated one year ago
 3 replies
 1 Medal
Mathematics
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