Muons are cosmic particles generated in the upper part of the atmosphere. Their mean lifetime, in the reference frame of the muon, is 2.2 × 10–6 s. Now, assume a muon travelling with a speed of 0.6c relative to an observer on Earth. What would be the approximate distance this muon travels, according to the observer?  

An alien spy drone flies directly over a field at a speed of 0.50c. If the proper length of the field is 100 yards, what field length is measured by the drone?

An instructor is showing the standing waves demo in the class. A 4.00-m long string, clamped at both ends, vibrates with a frequency of 200 Hz. On the string, the students can clearly see a standing wave with six segments. What is the speed of transverse waves on the string?

An alien spy drone flies directly over a field at a speed of 0.50c. If the proper length of the field is 100 yards, what field length is measured by the drone?

When a 19 N force is applied, it compresses a spring by 0.085 m. Determine the period of oscillation of a 4.0-kg object making a simple harmonic motion with this spring.

A mass of a sculpture made of lead is initially 5 kg. What would be the increase in the mass of the sculpture when its temperature is increased by 525 C°. The specific heat capacity of lead is 128 J/(kg x C°).    

A heat engine operates in a Carnot cycle between reservoirs of temperatures 1000 K and 400 K. It is found to discharge 20 J of heat per cycle to the cold reservoir. What is the work output per cycle?

A heat engine operates in a Carnot cycle between reservoirs of temperatures 1000 K and 400 K. It is found to discharge 20 J of heat per cycle to the cold reservoir. What is the work output per cycle?

A heat engine operates in a Carnot cycle between reservoirs of temperatures 1000 K and 400 K. It is found to discharge 20 J of heat per cycle to the cold reservoir. What is the work output per cycle?

On a cold winter day, the outside temperature is –5.0 °C while the interior of a well-insulated garage is maintained at 20.0 °C by an electric heater.  Assume the walls have a total area of 75 m2, a thickness of 0.15 m, and a thermal conductivity of 0.042 W/(m · C°).  What is the cost to heat the garage for six hours at these temperatures if the cost of electricity is $ 0.11/kWh?  Note: 1 kWh = 3.6 × 106 J.