What is the speed of sound in air at 40°C?

L 10. A car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve has a radius of 80 meters. What is the centripetal force on the car?

What are the two factors that determine a material's density?

A 0.0663 kg ingot of metal is heated to 241◦C and then is dropped into a beaker containing 0.395 kg of water initially at 25◦C. If the final equilibrium state of the mixed system is 27.4 ◦C, find the specific heat of the metal.

A motorcycle and rider have a total mass equal to 300kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of - 5 m/s. what is the net force on the motorcycle?

A block of wood measuring 2.75 cm x 4.80 cm x 7.50 cm has a mass of 84.0 g. will the block of wood sink or float in water?

How does air resistance affect the acceleration of falling objects?

A ride-sharing car moving along a straight section of road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 28.0 m/s. Then the vehicle moves for 41.

In vacuum, red light travels at a greater speed than blue light does. a. true b. false?

If a steam engine produces work, how does the internal energy of the machine change?

When energy is converted from one form to another in a chemical or physical change, which of the following also changes by a measureable amount? Select the correct answer below: a. The total mass in the system b. The force of gravity c.