What are two disadvantages of burning coal, oil, or natural gas to provide energy?

At room temperature of 30 degree celsius, a glass of water takes one minute to cool from 80 degree celsius to 60 degree Celsius. How long will it take to further cool from 60 degree celsius to 50 degree celsius?

Newton's Second Law says that force is equal to mass times acceleration. If the car and washer were more massive, you would need (more / less) force to accelerate car and washer equally. (5 pts)

When you spin quickly, you may feel dizzy. Which component of the inner ear generates the sensations that can lead to this feeling?

A rainbow viewed from an airplane may form a complete circle. Where will the shadow of the airplane appear? Explain.

Which change would increase the mechanical advantage of dentures, which are artificial teeth?

A 3.7 kg block is pushed along a horizontal floor by a force modifyingabove upper f with right-arrow of magnitude 25 n at a downward angle θ = 40°. the coefficient of kinetic friction between the block and the floor is 0.26.

When one object heats another, does the temperature increase of one object always equal the temperature decrease of the other object? Explain

Add the following displacement vectors: 12 m south and 15 m 55° E of N?

And electric current is produced by which of the following processes? A. Electrical resistance B. Transfer of protons C. Convection currents D. Electromagnetic induction

The basic building block of life is