What is the formula for calculating the efficiency of a heat engine

The Great Outdoors 1. What outdoor activities do you prefer? Why? 2. What outdoor activities are you interested in, but have never tried?

A car is rounding a 100-m-radius curve at 25 m/s. What is the minimum possible coefficient of static friction between the tires and the ground?

Explain why it can hurt your hands when you carry heavy shopping in carrier bags.

You are playing a game called "Will It Float?" In this game, you are given a large, square can of tuna. If you know the density of water, what is the minimal information you need to decide if the tuna will float in the water?

You record the length of different people's feet is this an example of a controlled experiment true or false

A compound consisting of atoms of small atomic mass is more likely to require

Wave can be described as A. a continuous transmission of energy from one location to the next B. The disturbance of particles in an area C. The transmission of energy through individual particles D. The motion of particles in a medium

A germ is also called a microorganism or a microbe. True False

What is 1.33Ω plus 2Ω?

As a fire truck approached Mary, the pitch of the siren got higher. once the fire truck passed and moved away, the sirens pitch got lower. this change in pitch is because in the sound waves