Spiral galaxies have a central core from which curved arms spiral outward.

true or false

When you drop a 0.43 kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s^2 toward the earth's surface. According to Newton's third law, the apple must exert an equal but opposite force on Earth. If the mass of the earth 5.

Witch symbol in a chemical equation separates the reactants from the product?

What is the same about all electromagnetic waves

Two objects, one of mass m and the other of mass 2m, are dropped from the top of a building. When they hit the ground Two objects, one of mass and the other of mass 2, are dropped from the top of a building.

What is the turntable's angular velocity at t = 2.5 s? express your answer to two significant figures and include the appropriate units?

A boulder on top of a cliff has a potential energy of 12400J. How high above is the boulder?

If the graph represents speed what is measured on the x and y axes

It is difficult to lift a heavy stone than the lighter one on the earth, why?

The vapor pressure of ethanol at 25 degrees C is 7.83 kPa. Calculate the vapor pressure in atm. Round answer to 3 significant digits.

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.