Other Physics Answers

A 2000 kg truck accelerates from 20kph to 120 kph in 10 seconds. Find its engine’s power output in watts. 

1. Air resistance is an example of _____?

A. Gravity

B. Friction

C. Natural motion

D. All of the above

A wave is modeled by the wave function y(x,t) = (0.51m) sin[(2π/7.9m)(x-(14.3m/s)t)]. What is the period of the wave?

Round your answer to 2 decimal places.

Do not forget the unit

What is the wavelength of the waves you create in a swimming pool if you splash your hand at a rate of 1.41 Hz and the waves propagate at a wave speed of 5.54 m/s?

Round your answer to 2 decimal places.

Do not forget the unit.

A wave is modeled with the function y(x,t) = (0.46m) cos((0.72rad/m)x − (0.77rad/s)t + π/3). Find the period.

Round your answer to 2 decimal places.

Do not forget the unit

A wave is modeled with the function y(x,t) = (0.66m) cos((0.03rad/m)x − (0.9rad/s)t + π/3). Find the wavelength.

Round your answer to 2 decimal places.

Do not forget the unit

A wave is modeled with the function y(x,t) = (0.58m) cos((0.21rad/m)x − (0.03rad/s)t + π/3). Find the wave speed.

Round your answer to 2 decimal places.

Do not forget the unit

Transverse waves travel through a string where the tension equals 14.58 N with a speed of 20.61 m/s. What tension would be required for a wave speed of 25.36 m/s?

Round your answer to 2 decimal places.

Do not forget the unit

What is the wavelength of an earthquake that shakes you with a frequency of 33 Hz and gets to another city 95 km away in 20.6 s?

Round your answer to 0 decimal places.

Do not forget the unit

A string is 6.17 m long with a mass of 3.37 g. The string is held taut with a tension of 448 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?

Round your answer to 5 decimal places.

Do not forget the unit