A train travels 51 kilometers in 1 hours, and then 72 kilometers in 5 hours. What is its average speed?

Exercise 15.17: The upper end of a 3.80-m-long steel wire is fastened to the ceiling, and a 54.0-kg object is suspended from the lower end of the wire. You observe that it takes a transverse pulse 0.

A student measures the speed of yellow light in water to be 2.00 x 10 (to the 8th power) meters per second, 1.87 x 10 (to the 8th power) meters per second, and 2.39 x 10 (to the 8th power) meters per second. if the accepted value for the speed is 2.

A 2-kW resistance heater in a water heater runs for 3 hours to raise the water temperature to the desired level. Determine the amount of electric energy used in both kWh and kJ.

A water pump with a power of 3.4 * 102 watts lifts water at the rate of 7.5 * 10-2 meters/second from a water tank. What is the force exerted by the pump on the water?

A metal sphere is launched with an initial velocity of 1.5 m/s as it leaves the ramp. the end of the ramp is 1.20 m above the floor. calculate the range of the sphere.

Which method would you use to find the volume of an irregular shaped object?

A step up transformer has a primary coil with 100 turns and a secondary coil with 25 turns if the input voltage in the primary coil is 40 volts what is the output voltage reduced to in the secondary coil A) 20 volts B) 35 volts C) 4 volts D) 10

An instrument used to measure atmospheric pressure is called a

A 200-kg boulder is 1000-m above the ground. what is its potential energy?

The law of reflection states that if the angle of incidence is 81 degrees, the angle of reflection is ___ degrees.