This solution provides an easy to interpret and descriptive solution to solve for this physics based problem. All of the variables which are required and the units needed, are explained to allow for a full understanding of how to achieve the answer.

Question: The exhaust temperature of a carnot heat engine is 350 degrees Celsius.What is the intake temperature if the efficiency is 25%?
a) 400
b) 543
c) 558
d) 830

Problem 1. Bob is watching Anna ﬂy by in her high-speed plane, which Anna knows
to be 70 m in length. As a greeting, Anna turns on two lights simultaneously, one in front
and one at the tail. According to Bob, the lights come on at different times, 45 ns apart.
How fast is the plane moving?
Problem 2. A muon has a mean l

Please help with the following physics problems.
1. The current that flows through an incandescent light bulb immediately after it is turned on is higher than the current that flows moments later. Why?
2. The Earth's magnetic field lines are not parallel to its surface except in certain places. They actually "dip" downwar

Consider a hot air-balloon. The deflated balloon, gondola, and 2 passengers have a combined mass of 315 kg. When inflated, the balloon contains 871m^3 of hot air. Find the temperature (degrees C) of the hot air required to lift the balloon off the ground. The air outside the balloon has a temperature of 20.2 degrees C and a pres

Question: Both the pressure and volume of a given sample of an ideal gas double. This means that its temperature in kelvins must.
a. Quadruple
b. Reduce to one fourth its original value
c. Reduce to one half its original value
d. Remain unchanged.
e. Double

Solve the problem using algebra.
1 Find the Celsius temperature(to the nearest degree when Fahrenheit temperature is 9 degrees by solving the equation 59= 9/5 C +32, where F is the Fahrenheit temperature (in degrees and C is the Celsius temperature.
2. A square plywood platform has a perimeter which is 7 times the length of

Three thermometers are placed in a closet, insulated box and are allowed to reach thermal equilibrium. One is calibrated in Fahrenheit degrees, one in Celsius degrees, and one in Kelvins. The Celsius thermometer reads -40 degrees; Celsius and the Kelvin thermometer read 233K. Which of the following statements is necessarily tru

In an experiment, a certain amount of steam was allowed to mix with a known mass of cold water whose temperature is known. The change in temperature was noted. From the data obtained, calculate the heat of vaporization of water.
Weight of calorimeter = 100.0g
Specific heat of calorimeter = 0.1cal/g°C
Mass of water =