Which term describes the number of protons in one atom of an element

A 256 Hz tuning fork is resonating in a closed tube on a warm day when the speed of sound is 346 m/s. What is the length of the closed tube? A. 1.35 m B. 0.74 m C. 0.34 m D. 0.18 m

Why is an energy source needed in order to have a working circuit

Light strikes a mirror's surface at 33 degrees to the surface. what will the angle of reflection be? what is the angle betwwen incident ray and reflected way

What is an organism that relies on other things for food?

a 2,000 pound car is driving at 60 miles/hour along a straight, level road. what is the net force acting on the car?

A rightward force of 302 n is applied to a 28.6 kg crate to accelerate it across the floor. thye coefficient of friction between the crate and the floor is 0.750. determine the acceleration

How the properties of sound waves change as they spread out in a spherical pattern

If legos are plastic can they be recycled?

At an accident scene on a level road, investigators measure a car's skid mark to be 93 m long. It was a rainy day and the coefficient of friction was estimated to be 0.35.

How does a shorter wavelength affect the frequency of a wave?