Extremely high temperatures and pressures are necessary for fusion reactions to take place in stars. true or false.

4) What causes the Moon to orbit around the Earth?

What is the chemical compound of kitchen salt?

What is the force on a. 8 kg peach falling freely in a Yakima orchard

Which characteristics do all terrestrial planets have? Select all that apply. A. Water B. Iron core C. Rocky crust D. Thin atmosphere E. Dense atmosphere F. Relatively high density

How much heat energy (in megajoules) is needed to convert 7 kilograms of ice at - 9 degrees Celsius to water at 0 degrees Celsius? A) 3.09 MJ B) 2.13 MJ C) 2.48 MJ D) 3.26 MJ

If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2m/s2 and is constant with height

How does the mass of an astronaut change when she travels from earth to the moon? how does her weight change?

If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?

Discuss how systematic and random errors influence the precision and accuracy of an experiment.

Matthew rolls a bowling ball with a speed of 2 meters/second. The ball hits the pins with 1.8 joules of kinetic energy. The mass of the bowling ball is kilograms. NextReset