A child is stationary on a swing. The child is given a push by his brother to start him swinging. His brother applies a steady force of 84 N over a distance of 0.25 m. Calculate the work done by this force.

Given two vectors A⃗ = - 2.00i^ + 4.00 j^ + 4.00 k^ and B⃗ = 1.00 i^ + 2.00 j^-3.00k^, do the following. |A⃗ | = Part B |B⃗ | = Part C Write an expression for the vector difference A⃗ - B⃗. Enter your answers numerically separated by commas.

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What does the addition of two vectors give you? A. A scalar B. The direction of the vector. C. A resultant vector D. The magnitude of the vector Apex answers needed

Two small objects each with a net charge of + q exert a force of magnitude f on each other: we replace one of the objects with another whose net charge is + 4q: the original magnitude of the force on the + q charge was f;

Which defintion of heat is most scientifically accurate

A charge if 2 nC is placed 10cm to the right of a conducting sphere with a diameter of 2 cm. A charge of 5 nC is placed 10 nC to the left of the same sphere. determine the charge at the center of the sphere.

1) How is chemical energy transformed into potential energy?

A double-paned window has two glass panes separated by a layer of air. Why is air, rather than glass, used to fill this space?

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What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours