EASE 2 Preparation - Physics

Which property of an object cannot be changed by applying forces?

• Mass

• Shape

• Speed

• Volume

A single force acts upon an object and the volume of the object does not change. Which statement is correct?

• The density of the object changes

• The velocity of the object changes

• The mass of the object changes

• The weight of the object changes

The extension-load graph for a spring is shown. The unstretched length of the spring is 15.0 cm. When an object of unknown weight is suspended on the spring, the length of the spring is 16.4 cm. What is the weight of the object?

• 0.55 N

• 0.67 N

• 3.5 N

• 4.1 N

The diagram shows a load-extension graph for steel spring. The length of the spring with no load attached is 2.0 cm. Which load increases the length of the spring to 6.0 cm?

• 0.5 N

• 1.0 N

• 1.5 N

• 2.0 N

Four submarines are submerged. The density of fresh water is 1000 kg/m^3 and the density of sea water is 1020 kg/m^3. Which submarine experiences the greatest pressure due to the water?

• A

• B

• C

• D

The equation Δρ=ρgΔh can be used for a liquid. What is the meaning of the term ρ?

• Pressure due to the liquid

• Density of the liquid

• Total pressure due to the liquid and the air above the liquid

• Density of an object placed in the liquid

Which row describes how the pressure beneath the surface of a liquid depends on the depth below the surface and on the density of the liquid?

• A

• B

• C

• D

An object taken underwater will be damaged if the total pressure acting on it is greater than 2.1 Mpa. What is the maximum depth that the object can be taken underwater before it breaks? Atmospheric pressure = 101000 Pa, Density of water = 1000 kg/m^3

• 10.3 m

• 204 m

• 214 m

• 225 m

A woman has a weight of 600 N. She stands on a horizontal floor. The area of her feet in contact with the floor is 0.050 m2. What is the pressure she exerts on the floor?

• 1.2×10^3 N/m2

• 2.4×10^3 N/m2

• 1.2×10^4 N/m2

• 2.4×10^4 N/m2

The diagram shows a rectangular metal block with dimensions 2.5 cm x 3.0 cm x 4.5 cm. The block is resting on the ground. The block exerts a pressure of 0.23 N/cm2 on the ground. What is the weight of the metal block?

• 0.020 N

• 1.7 N

• 2.6 N

• 3.1 N