What is a force? A. A force is a form of energy. B. A force is equivalent to work. C. A force is a substance that reacts with matter. D. A force is a push or a pull.

Fariza wears a red hat in her school play. On stage, she is lit by a spotlight shining only green light. When our eyes receive no light from an object, it looks black. Explain why Fariza's hat looks black on stage.

Two carts collide and bounce apart. Cart 1 had a momentum of - 6 kg • m/s before the collision. Cart 2 had a momentum of 10 kg • m/s before the collision. What is the total momentum of the carts after the collision?

Car is travelling 100 km/h west and comes to a stop in 3 min. what is the car's acceleration?

Three arrows are shot horizontally. They have left the bow and are traveling parallel to the ground. Air resistance is negligible. Rank in order, from largest to smallest, the magnitudes of the horizontal forces F1, F2, and F3 acting on the arrows.

What type of disorder is myasthenia gravis? A. Immune disorder B. Inflammatory disorder C. Structural disorder D. Infectious disorder

Which of the following statements is true? The freezing and boiling temperatures of a substance are the same. The freezing and condensation temperatures of a substance are the same. The freezing and melting temperatures of a substance are the same.

What's bigger 32A or 32B

Two charged objects have a repulsive force of. 080 N. if the charge of both of the objects is doubled, then what is the new force?

A hiker leaves her camp and walks 3.5 km in a direction of 55° south of west to the lake. after a short rest at the lake, she hikes 2.7 km in a direction of 16° east of south to the scenic overlook.

A star has a mass of 1.36 x 1030 kg and is moving in a circular orbit about the center of its galaxy. the radius of the orbit is 2.1 x 104 light-years (1 light-year = 9.5 x 1015 m), and the angular speed of the star is 1.1 x 10-15 rad/s.