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Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 473 m/s. What is the temperature (in Kelvin) of the environment?
Find the work done by this force on the particle.
A box is at rest on a horizontal table. Is it because of the first law, second law, and or third law of motion that those two forces are equal
A 72 kg man is riding on a 40 kg cart traveling at a speed of 2.5 m/s. What is the resulting change in the cart's speed, including sign
With each cycle, a 2430-W engine extracts 2080 J from a thermal reservoir at 90 °C and expels 1510 J into a thermal reservoir at 20 °C. How much time does each cycle take
Two lenses, one converging with focal length20.0cm and one diverging with focal length? 11.5cm , are placed 25.0?cm apart. Determine the magnification of the final image formed
The centers of a 15kg lead ball and a 50g lead ball are separated by 10cm, What is the ratio of this gravitational force to the weight of the 50g ball
An 10m, 210N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50° angle with the ground. How far up the ladder can an 850N person climb before ladder b..
Old naval ships fired 14 cannon balls from a 240 cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship.
for an arrangement sshown block 1 and block 2 are both the same mass. determine the downward acceleration of block1
Suppose that a police car on the highway is moving to the right at 29 m/s, while a speeder is coming up from almost directly behind at a speed of 31 m/s, which wave has the greater frequency
A velodrome track is banked so that a bicycle traveling at 69.9 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 54.0 m
A stockroom worker pushes a box with a mass 11.2kg on a horizontal surface with a constant speed of 3.50m/s. coefficient of kinetic friction between the box and the surface is 0.20.
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