A projectile is fired from the surface of the earth with a velocity of 5 m s⁻¹ and angle
A projectile is fired from the surface of the earth with a velocity of 5 m s⁻¹ and angle θ…
7 years ago
Gravitation
A black hole is an object whose gravitational field is so strong that even light
A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To…
7 years ago
An artificial satellite is revolving round the earth in a circular orbit. Its velocity
An artificial satellite is revolving round the earth in a circular orbit. Its velocity is half the escape velocity. Its…
7 years ago
Periodic time of a satellite revolving above Earth’s surface at a height equal to R,
Periodic time of a satellite revolving above Earth's surface at a height equal to R, radius of Earth is (g=acceleration…
7 years ago
Infinite number of masses, each 1 kg, are placed along the x-axis
Infinite number of masses, each 1 kg, are placed along the x-axis at x= ±1 m, ±2 m, ±4 m,…
7 years ago
A siren emitting sound of frequency 800 Hz is going away from a static listener
A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30…
7 years ago
Suppose for some reasons, radius of earth were to shrink by 1% of present value,
Suppose for some reasons, radius of earth were to shrink by 1% of present value, mass remaining same, then g(acceleration…
7 years ago
In some region, gravitational field is zero. The gravitational potential
In some region, gravitational field is zero. The gravitational potential in this region Options (a) Must be variable (b) Must…
7 years ago
A satellite is revolving around the earth with a kinetic energy E. The minimum
A satellite is revolving around the earth with a kinetic energy E. The minimum addition of kinetic energy needed to…
7 years ago
Imagine a new planet having the same density as that of earth but it is 3 times bigger
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the…
7 years ago