physics

The total area under a force-velocity graph represents?

A. energy B. momentum C. power D. pressure Correct Answer: Option A A. energy

6 years ago

A body of mass 2kg is released from rest on a plane inclined at an angle of 60º to the horizontal. Calculate the acceleration of the body down the plane.[g = 10ms‾²]

A. 3.1ms‾² B. 5.2ms‾² C. 6.0ms‾² D. 8.7ms‾² Correct Answer: Option D D. 8.7ms‾² Explanation a = g sin θ…

6 years ago

The slope of a linear distance-times graph represents?

A. acceleration B. displacement C. speed D. velocity Correct Answer: Option C C. speed

6 years ago

Solid friction, like viscosity, is?

A. independent of the surface area in contact B. independent of the relative motion between layers C. dependent on the…

6 years ago

Which of the following statements about pressure in a liquid is correct?

A. the pressure in a liquid increases with depth B. the higher the density of a liquid, the lower the…

6 years ago

Which of the following units is equivalent to the watt?

A. kgms‾² B. kgm²s‾³ C. kgm²s‾² D. kgm²s‾¹ Correct Answer: Option B B. kgm²s‾³ Explanation Power=Work done/time = (Force×distance)/time =…

6 years ago

The rising of a liquid in an open and ended glass tube of narrow bore is?

A. osmosis B. adhesion C. capillarity D. surface tension Correct Answer: Option C C. capillarity

6 years ago

An aluminum foil is placed across a beam of radiation from a radioactive source. Which of the following types of radiation will be stopped by it?

A. alpha and beta particles B. alpha and gamma particles C. beta and gamma particles D. gamma particles only Correct…

6 years ago

Which of the following statements is the major advantage of nuclear fusion over nuclear fission?

A. nuclear fusion releases more energy B. more neutrons are released in fusion than in fission C. fusion does not…

6 years ago