Answer:
Explanation:
Earth ⇒ 9.8 m/s²
Mercury ⇒ 3.7 m/s²
Neptune ⇒ 11.2 m/s²
Uranus ⇒ 8.9 m/s²
The weight of a person can differ on different planets, but the mass stays the same. The greater the acceleration due to gravity, the greater the weight.
Arranging the planets in increasing order based on a person’s weight on the planet:
Mercury, Uranus, Earth, Neptune
The work done is
Explanation:
The work done by a force on an object is given by:
where
F is the magnitude of the force
d is the displacement of the object
is the angle between the direction of the force and of the displacement
In this problem, we have
F = 1080 N is the force applied on the car
d = 218 m is the displacement of the car
And assuming the force is applied parallel to the motion of the car, , and so the work done is
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Explanation:
A charge alters the space around it. This alteration of space is called the electric field. It is also defined as the electric force acting on a charged particle per unit test charge. It is given by :
Where
F is the electric force,
The direction of electric field is in the direction of electric force. For a positive charge, the direction of electric field lines are outwards and for a negative charge, the direction of field lines are inwards.
Hence, the correct option is (c) "electric field".
The force exerted by the laser beam on a completely absorbing target is .
The given parameters;
The speed of the emitted laser light is given as;
v = 3 x 10⁸ m/s
The force exerted by the laser beam on a completely absorbing target is calculated as follows;
P = Fv
Thus, the force exerted by the laser beam on a completely absorbing target is .
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