Inside a star the force of gravity is balanced by

What substance is represented by chemical formula C60

Jenny is sitting on a sled on the side of a hill inclined at 15°. What force is required to keep the sled from sliding down the hill if the combined weight of Jenny and the sled is 90 pounds?

Why don't metals break when hit with hammer

Equus caballus is the scientific name for a domestic horse. Equus zebra is the scientific name for a zebra. Which of the following statements is true? 1. The domestic horse belongs to the Equus order. 2.

A force of one newton is equivalent to

If the mass of a material is 77 grams and the volume of the material is 19 cm3, what would the density of the material be

A bicyclist is in a 50-km race. She says she had an average velocity of 35. What is missing in the cyclist's velocity? A. units only B. units and distance C. direction only D. units and direction

Which one of the following statements concerning emf is true? A) Emf is the work done in moving the current from one terminal to the other of an emf device.

A fan is a complex machine? True or false?

Which force does not operate at a distance of 1 m? A. Weak nuclear O B. Electric C. Gravitational D. Magnetic