Which subatomic particles each have a positive electrical charge?

a. protons

b. neutrons

c. electrons

What is the measure of the force that gravity applies to an object

How will a lens with a long focal length bend light? a. a lot b. a little c. not at all d. It depends of the height of the lens.

James added a new video card and needs to get a power supply that will have enough power to run the new card.

If the earth's differentiation were any different, it may have affected its gravitational pull and. Both of these factors were essential to creating our atmosphere. A. Heat Transfer b tempter Tectonic activity

A charge of 9.0 x 10-5C is placed in an electric field with a strength of 4.0 x 104 N. What is the electrical force acting on the charge?

A wire carrying a 2-A current is placed at an angle of 60° with the respect to a magnetic field of strength 0.2 T. If the length of the wire is 0.6 m what is the magnitude of the magnetic force acting on the wire?

A meteorologist wants to measure the temperature. Which weather instrument should the meteorologist use? a. a barometer b. a rain gauge c. a thermometer d. a weather vane

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A person lifts a 4.5 kg cement block a vertical distance of 1.2 m and then carries the block horizontal - ly a distance of 7.3 m. determine the work done by the person and by the force of gravity in this process.

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.