A water tank has a mass of 2.43 kg when it is empty, and a mass of 54.2 kg when it is filled to a certain level. What is the mass of the water contained in the tank at this level?

If a car travels at 65mph for 2.25 hours, how far does it go in miles?

Which of the following accurately shows how to calculate the weight of a 20 kg object? A) 20 Kg x 9.8m/s2 B) 20 Kg / mass of the earth C) 20 kg/9.8 m/s2 D) 20 kg x mass of the earth

As a rocket moves farther and farther upward from the launch pad, what happens to the strength of Earth's gravitational field around the rocket? a. It gets weaker. b. It grows stronger. c. It remains constant.

A student analyzes data of the motion of a planet as it orbits a star that is in deep space. The orbit of the planet is considered to be stable and does not change over time.

Summarize the law of superposition

Which of the following best describes each particle? A. Protons are negative, neutrons are neutral, and electrons are positive. B. Protons are neutral, neutrons are positive, and electrons are negative. C.

During World War II, both the Allied and Axis powers used propaganda to A. weaken public support for the war. B. downplay public opinion. C. manipulate the public through the use of humor. D. shape public support of the war

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