Does sound move faster in a warm or cold room

A stubborn 130 kg pig sits down and refuses to move. to drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 n. the coefficients of friction between the pig and the ground are μs=0.

In an inelastic collision, which of the following statements is always true? [A] Kinetic energy is conserved in the collision. [B] Momentum is conserved in the collision. [C] After the collision, the objects always merge into one.

What event happens about once every month? A. a revolution of the Earth around the Sun B. a rotation of the Earth C. a full Moon D. a lunar eclipse

Suppose you sound a 1056-hertz tuning fork at the same time you strike a note on the piano and hear 2 beats/second. You tighten the piano string very slightly and now hear 3 beats/second. What is the frequency of the piano string?

Four particles, one at each of the four corners of a square with 2.0-m-long edges, are connected by massless rods. The masses are m1=m3=3.0 kg and m2=m4=4.0 kg. Find the moment of inertia of the system about the z axis.

run at the same speed and in the same direction, and they both run for the same amount of time, what can you say about the distance they travel?

How can you show positive body languages with your mouth

After making minor changes to a team report, Jeff felit like he had done enough work on the project. When he was asked to contribute more, he got offlended and quit responding to requests from some leam members.

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

Calculate the acceleration of a 90-kg skydiver with a net force of - 883 N