The motor of a 1780 kg speed
boat pushes 3880 n to the right.
air resistance pushes 512 n to the
left, and the water drags the boat
1910 n to the left. what is the
acceleration of the boat?
(unit = m/s2)

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n