If two firecrackers produce a combined sound level of 85 dB when fired simultaneously at a certain place, what will be the sound level if only one is exploded?

Electric energy is generated at a nuclear power plant using which type of nuclear reaction

Electromagnetic waves carry energy. This phenomenon is also called electromagnetic radiation. How is energy transferred in electromagnetic waves?

How would the velocity of the book change if the applied force were equal to the sliding friction force

Is it true that the lighter the object, the less air resistance?

Two moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2250 J of heat is added to the gas, and 870 J of work is done on it. What is the final temperature of the gas

Your friend of mass 50 kg can just barely float in fresh water. Calculate her approximate volume.

A flashlight beam strikes the surface of a pane of glass (n = 1.50) at a 61° angle to the normal. what is the angle of refraction?

Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is cause warming

If the resistance of a circuit increases, that means that the current has to

One watt is equal to which of these values? 1 joule/hour 1 joule-hour 1 joule/second 1 joule-second