A string vibrates at a frequency of 28 Hz. What is it's period

A woman pulls a crate up a rough, inclined plane at constant speed. Which one (s) of the following statements concerning this situation is (are) correct? Group of answer choices The woman does positive work in pulling the crate up the incline.

If kenny lifts a box that weighs 6.4 kg, how many grams is he lifting?

Cicadas produce a sound that has a frequency of 123Hz. What is the wavelength of this sound in air at room temperature? (2.79m)

Why convection current make circular motions?

who developed the quantum theory? who is remembered as the father of nuclear science? who developed the theories of relativity?

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth

A battery applies 45 volts to a circuit, while an ammeter reads 10 ma. later, the ammeter reading drops to 7 ma. assuming the resistance has not changed, the voltage must have

A 150-kg object takes 1.5 minutes to travel a 2,500 - meter straight path. It begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s. What is the acceleration?