Mechanics | Relativity Answers

1: thr energy absorbed by each molecule(A2) of a substance is 4.4 * 10raised to power -19 j and bond energy per molecule is 4.0 *10 raised to power -19j .the kinetic energy of the molecule per atom will be?

What is the gravitational field strength at a height h above the surface of the Earth? R is the radius of the earth

The instrument used for experimental determination of the value of the universal gravitational constant G is called

At what altitude above the earth's surface would the acceleration due to gravity be 4:9ms-2 ? Assume the mean radius
of the earth is 6:4 x 106 metres and the acceleration due to gravity 9:8ms-2 on the surface of the earth

A man weighs 750 N on the surface of the earth. What would be his weight when standing on the moon? The masses of
the earth and the moon are respectively,5:98 x 1024kg and 7:36 x 1022kg. Their radii are respectively 6:37 x 103km and1:74 x 103km
km
200.5 N
123.7 N
550.4 N
1000.0 N

A man weighs 750 N on the surface of the earth. What would be his weight when standing on the moon? The masses of
the earth and the moon are respectively,5:98 x 1024kg and 7:36 x 1022kg. Their radii are respectively 6:37 x 103km and 1:74 x 103km

A 2000 kg satellite orbits the earth at a height of 300 km. What is the speed of the satellite and its period? Take G = 6:67 x 10-11Nm2=kg2
, Mass of the earth is 5:98 x 1024kg

What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h? Take G = 6:67 x 10À11Nm2=kg2
, Mass of the earth is 5:98 x 1024kg

Given that the mass and radius of Jupiter are respectively 1:90 x 1027 kg and 7:15 x 104 km, calculate the escape
velocity from the surface of the planet

A ball of mass 50 g tied to the end of a 50 cm inextensible string is whirled around in a vertical circle. Find the tension
in the string when the ball is at the top of the circle. Take g=10m/s2