A 22 kg sled is pushed for 5.2 m with a horizontal force of 20 N, starting from rest. ignore friction. find the final speed of the sled.

2.2 m/s

4.7 m/s

9.5 m/s

3.1 m/s

A concrete highway is built of slabs 12 m long (20°C). How wide should the expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is - 30° to + 50°C? (12 x 10⁻⁶ °C⁻¹ for concrete)

The net change in energy equals the energy transferred as work and as heat is called what

What sequence shows electromagnetic waves arranged from shorter to longer wavelengths? A. Visible light, infrared radiation, microwaves, and ultra violet rays B. infrared radiation, Visible light, ultra violet radiation, and microwaves C.

Which is the relationship between algae and fungus? Options: Parasitism. Commensalism. Mutualism.

A small sphere of mass m is launched horizontally over a body of water from a height h above the water and with a launch speed v0. Determine expressions for the following in terms of m, v0, h, and g. Air resistance is negligibly small.

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.