physics

A body is projected into space with an initial velocity V0 at an angle θ to the horizontal. Which of the following statements is/are correct about its motion?

I. The total time of flight is (V0Cosθ)/g. II. The maximum height is (V0Sin2θ)/2g. III. The range is (V0²Cos²θ)/g. A.…

5 years ago

When three coplanar and non-parallel forces are in equilibrium; which of the following statements above are correct?

I. they can be represented in magnitude and direction by the three sides of a triangle taken in order. II.…

5 years ago

A man will exact the greatest pressure on a bench when he?

A. lies flat on his back B. lies flat on his belly C. stand on both feet D. stand on…

5 years ago

The slope of a straight line displacement time graph indicates the?

A. Distance travelled B. Uniform velocity C. Uniform acceleration D. Instantaneous acceleration E. Uniform speed Correct Answer: Option B -…

5 years ago

Which of the units of the following physical quantities are derived?

I. Area II. Thrust III. Pressure IV. Mass A. I, II, III & IV B. I, II, III only C.…

5 years ago

What is the gravitational potential due to a molecule of mass (m) and at a distance (r) from it? (G = gravitational constant).

A. Gm²/r² B. Gm/r C. Gm²/r D. G²m2/r E. m²/Gr² Correct Answer: Option B - Gm/r

5 years ago

Which of the following is not a property of longitudinal waves?

A. compression B. reflection C. refraction D. polarization E. diffraction Correct Answer: Option D - polarization

5 years ago

In a wave the maximum displacement of particles from their equilibrium positions is called?

A. frequency B. amplitude C. period D. wavelength E. wave velocity Correct Answer: Option B - amplitude

5 years ago