Which choice can be correctly defined as "the sum of all charge in a closed system remains constant"?

law of conservation of energy

law of conservation of mass

law of conservation of momentum

law of conservation of charge

A box that has a mass of 80 kg slides down a ramp with a 30 degree angle. The free-body diagram shows the forces acting on the box. Ignoring friction and air resistance, what is the acceleration of the box, to the nearest tenth? -0.5 m/s2 -4.

What are the building blocks of all matter including solids, liquids, and gasses

Meg runs a 10-km race in 45 minutes (0.75 hours). what was her speed in kilometers per hour? a. 7.5 km/hr b. 4.5 km/hr c. 13 km/hr d. 22 km/hr

What were the wars between the Holy Roman Empire and the Muslims called?

Technician A says that the intake and exhaust manifolds have to be removed before removing the engine from the vehicle.

Which have a positive charge? neutrons atoms protons electrons

Now that we know the velocity of the cart before the collision is 1.80m/s, let's use this to determine the linear momentum and kinetic energy of the disk-cart system before the collision. The mass of the cart is 23.5kg. The mass of the disk is 11.

A circuit is built based on the circuit diagram shown. A diagram of a closed circuit with a power source on the left labeled 60 V. There are 3 resistors in parallel, separate paths, connected to it labeled 40 Ohms, 50 Ohms and 30 Ohms.

After harvesting their main crops, such as corn and wheat, many farmers plant a second crop called a cover crop. This cover crop grows during the fall and winter and is then plowed over in the spring. What is the main purpose of a cover crop? A.

A light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light wave to change the light wave will