Answer:
As a result, if the field lines are close together (that is, the field line density is greater), this indicates that the magnitude of the field is large at that point. If the field lines are far apart at the cross-section, this indicates the magnitude of the field is small. (Figure) shows the idea.
Explanation:
-- The spaceship's AVERAGE speed during the acceleration is
(1/2) (58 m/s + 153 m/s))
= (1/2) (211 m/s)
= 105.5 m/s .
In 12 seconds at an average speed of 105.5 m/s,
the ship covers
(105.5 m/s) (12 sec) = 1,266 meters .
The energy that the student shoud use in order to climb the stairs is equal to its increase in gravitational potential energy:
where m is the mass of the student, g the gravitational acceleration and
the variation of height. Plugging numbers into the equation, we find
The power required for the student to climb the stairs is equal to the work done divided by the time taken:
This specific question applies the concept of relative velocity. Relative velocity is describes as the velocity of an object with respect to another object, whether static or moving. For this problem, the correct statement is t<span>he spotter above the tunnel will observe the speed of the spy as 95 km/h, and the person in the car will observe the speed of the spy as 200 km/h. The following are the justification, relative speed of the spotter at the tunnel is equal to velocity (Vss) = velocity spy relative to the ground (Vsg) + V ground relative to the spotter (Vgs). Thus, V = 95 + 0 km/h = 95 km/h. Note that the sign of velocity is dependent on the direction, hence, opposite direction is equal to negative velocity. For the second condition, velocity of the spy in reference person in the car is equal to velocity of the spy reference to ground plus the velocity of the ground reference to the person in the car. Thus, V = 95 km/h + 105 km/h = 200 km/h. Please be cautious in assigning the sign of the velocity.</span>
Acceleration is any change in speed or direction of motion.
Speeding up, slowing down, or moving along a curve are all accelerations.