a ball at rest falls from a platform above the ground. the ball falls freely and hits the ground 1.1 s later. what is the platform

What is the equivalent resistance for a parallel circuit that has two resistors: 18.0 ohms and 23.5 ohms?

Suppose you observe that at night, the air just above the ground feels cooler than the air above it. then, in the middle of a sunny day, you notice that the air close to the ground feels warmer.

What kind of energy does Bow string have when it is stretched

Which one of the following acts is an example of body language? A. Acting on an attitude B. Showing prejudice C. Employing the peripheral route of persuasion D. Rolling of the eyes

How many kW*h (kilowatt hours) of electricity is consumed by a 500 w light bulb that burns for seven hours?

What type of simple machine is a hand drill? A) pulley B) wedge C) ramp D) screw

Calculate the wavelength and frequency of the radiation emitted by the electronic transition from the 10th to the 9th excited state of hydrogen.

An unknown fluid has a specific gravity of 0.750. What is the volume of 22.5 kg of this fluid? A. 10 L B. 20 L C. 30 L D. 40 L

What kind of tide is responsible for extreme tides

What does the speed of sound depend on? A. Medium that the sound travels through B. Acoustics C. Frequency of the sound D. Loudness of the sound