If y=x^2 + 2x, then dy/dx at x=4 is?

(a) 4

(b) 6

(c) 8

(d) 10

Which claim about the forces acting on the horse must be true? Choose 1 answer: Choose 1 answer: (Choice A) A There is not enough information. (Choice B) B There is no net force on the horse. (Choice C) C There is a net force on the horse.

A box slides down a 30.0° ramp with an acceleration of 1.20 m/s^2. Determine the coefficient of kinetic friction between the box and the ramp.

a 2,000-kilogram railroad car moving at 8m/s to the right collides with a 6,000-kilogram railroad car moving at 3m/s to the west. If the cars couple together, what is their velocity after the collision?

Moore said there are two electrons in the first shell then how many electrons would there be in the first shell of an atom of the atom

A 2 UC charge q1 and a 2 uC charge q2 are 0.3 m from the x-axis. A 4 uC charge q3 is 0.4 m from the y-axis. The distances d13 and d23 are 0.5 m. What is the magnitude and direction

Some lactic acid in the muscles dissipates during.

When two waves undergo complete, constructive interference, which of the following increases? A. speed B. amplitude C. wavelength D. frequency

Pressure = Force Area The formula above shows how pressure relates to force and area. For example, the pressure exerted by a fluid is equal to the force of the fluid divided by the area over which the force is applied.

1. Most waves are caused by vibrations. What motion in a transmitting antenna causes the vibrations that produce radio waves? 2. Name two common household appliances that produce electromagnetic waves other than radio waves.

A 3.70 kg block moving 2.09 m/s right hits a 2.42 kg block moving 3.92 m/s left. Find the total momentum of the system.