Answer:
Mirages happen when the ground is very hot and the air is cool.
Explanation:
They happen when light passes through two layers of air with different temperatures. The desert sun heats the sand, which in turn heats the air just above it. The hot air bends light rays and reflects the sky.
When you see it from a distance, the different air masses colliding with each other act as a mirror.
Answer:
The car evidently moved in the South-North direction.
Mașina se deplasa în mod evident în direcția Sud-Nord.
Explanation:
English Translation
At night, in a dark room, you notice on the wall opposite the window the movement of light spots from the headlights of a car in a south-north direction. In what direction did the car move?
Solution
Light rays fall obliquely on walls but move in the same direction as the car's direction of travel. And from the question, it is stated that the light rays move in the south-north direction, hence, the car in question, moved in the South-North direction too.
In Romanian/In limba romana
Razele de lumină cad oblic pe pereți, dar se mișcă în aceeași direcție ca direcția de deplasare a mașinii. Și din întrebare, se precizează că razele de lumină se deplasează în direcția sud-nord, prin urmare, mașina în cauză se deplasa și în direcția Sud-Nord.
Hope this Helps!!!
Sper că acest lucru vă ajută!!!
The force applied to the second ball by the first ball is 6.734 × 10^-4 N.
<h3>What is impulse of force?</h3>
The impulse of force is defined as the sum of the average force and the duration it is applied.
If the mass of the item remains constant, the impulse of force equals the change in momentum of the object.
Given that: mass of a metal sphere: m = 0.026 kg.
Initial speed of the sphere: u = 3.7 m/s.
When the sphere stops completely, its change in momentum = mu - 0
= 0.026×3.7 N-s.
= 0.0962 N-s.
As the spheres are in contact for 0.007s before the second sphere is shot off down the track, the force applied to the second ball =
change in momentum of 1st ball × time of contact
= 0.0962 × 0.007 N
= 0.0006734 N
= 6.734 × 10^-4 N.
Hence, the force applied to the second ball is 6.734 × 10^-4 N.
Learn more about impulse force here:
brainly.com/question/29787329
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Answer:
velocity equals distance divided by time and the unit you use after you get the answer is m/s
Explanation:
Answer:
Gravity dams are so named because they are held to the ground by gravity – they weigh a lot, and are typically made from concrete or stone. Engineers must de-water the river where the dam is meant to be built. This is done by diverting the river through a tunnel that runs around the intended construction zone.
