If The dimensions of a brick that weighs 25N are 0.19m x 0.07m x 0.095m. What pressure does the brick exert on the ground if it is resting on its largest face?

What is the net force on the box?

A car was moving at 30m/s when it hit a pole. It took 2 seconds to come to a stop. What was the car's acceleration in the crash

An arrow is fired directly horizontal off a cliff that is 10.0 meters tall with a velocity of 65.5 m/s. a) How long is the arrow in the air? b) What is the range of the arrow?

How does the burning of fossil fuels influence global temperature? How might the change in temperature affect other parts of Earth, such as the hydrosphere and biosphere?

Assume the speed of light to be 299 792 458 m/s. If the frequency of an electromagnetic wave is 80,000 GHz (GHz = gigahertz = 109 Hz), what is the wavelength of that radiation? Express your answer in micrometres (μm)

An alloy is made of a material of specific gravity 7.87 and another material of specific gravity 4.50. The alloy of mass 750g has an apparent weight of 6.6N when totally immersed in a liquid of specific gravity 0.78.

A ball with a mass of 3 kg moving at 5 m/s collides with a 9 kg ball at rest. After the collision, the impacting (3 kg) ball bounces back at a speed of 2.5 m/s. How fast does the 9 kg ball move and in what direction

Consider the four salts represented on the solubility curves displayed as line graphs. In all four cases the salts are which part of an aqueous solution?

A hot-air balloon of diameter 12 m rises vertically at a constant speed of 11 m/s. A passenger accidentally drops his camera from the railing of the basket when it is 19 m above the ground.

Describe the possible long term impact of a catastrophic event