What is the mass of a block of iron if a net force of 240N causes it to accelerate across a smooth surface at 2.5m/s^2?

What is an electric field? (choose all that are true) a) A vector field created by a charged particle. b) The field created when one charged particle is brought close to another charged particle. c) A scalar field created by a charged particle.

The following items describe observational characteristics that could indicate that an object is either a white dwarf or a neutron star. Match each characteristic to the correct object.

A 4.0-n puck is traveling at 3.0 m/s. it strikes an 8.0-n puck, which is stationary. the two pucks stick together. their common final speed is:

Which best explains why making a pancake from batter is an example of a chemical change? -The pancake that forms is a different state of matter. -The change from batter to pancake can be reversed. -A new substance forms when the batter is cooked.

An electron and a proton are separated by a distance of 1 m. What happens to the size of the force on the first electron if a second electron is placed next to the proton?

The emf produced in a generator is Vemf = 25 sin 377t. What is the frequency of rotation of the circular coil? 50 Hz 60 Hz 25 Hz 15 HZ

If a 1.0-kg-mass block is on the left cap, how much total mass must be placed on the right cap so that the caps equilibrate at equal height?

By what factor would your weight be multiplied if the earth were1/2 as massavise and the diameter was unchanged

Why does it seem harder to start sliding a couch across a carpeted floor than it oes to keep it moving?

Energy due to the motion of an object is called