if you want to have a scientifically valid sample for a study you are doing which of the following conditions must be met

What part of the body's defense includes the appendix, tonsils, and spleen

a net force of 25 newtons is applied horizontally to 10. - kilogram block resting on a table. what is the magnitude of the acceleration of the block?

The drawing shows the top view of a door that is 1.68 m wide. two forces are applied to the door as indicated. what is the magnitude of the net torque on the door with respect to the hinge?

What is the acceleration of an object that moves at constant velocity? what is the net force on the object in this case?

You push a cart with mass 20 kg forward, giving it an acceleration of 2 m/s2. How much force did you apply?

What is the total kinetic energy and potential energy of a object or group of objects

Identify the correct Units for a Force

Explain the relationship between force, mass and acceleration in Newton's second law

A 90-kilogram physics student would weigh 2970 Newtons on the surface of planet X. What is the magnitude of the acceleration due to gravity on the surface of planet X?

A truck with a heavy load has a total mass of 9100 kg. it is climbing a 15â incline at a steady 15 m/s when, unfortunately, the poorly secured load falls off! immediately after losing the load, the truck begins to accelerate at 1.5 m/s2.