Explanation

The force of friction opposes the motion of an object, causing moving objects to lose energy and slow down.

***

ND18-1-2023

Explanation

When the parachute opens, the air resistance increases.

The skydiver slows down until a new, lower terminal velocity is reached.

***

ND18-1-2023

Explanation

• If an opaque object is moved closer to the light source, the shadow gets bigger.
• This is because the light source appears larger and more intense from a closer distance, casting a larger shadow.

Explanation

A solar eclipse occurs when the Moon passes between Earth and the Sun,

thereby obscuring the view of the Sun from a small part of the Earth, totally or partially.

***

rk17123

Explanation

Copper has the highest thermal conductivity (386 K m-1 K-1)

Copper has high thermal conductivity.

AGM 25-12-2022

Explanation

Heat conduction is a process in which heat is transferred from the hotter part to the colder part in a body without involving any actual movement of the molecules of the body.

AGM 25-12-2022

Explanation

Conventionally, clockwise torque is taken as negative

because clocks run in a negative direction according to the right-hand rule.

**

Counterclockwise is the positive rotation direction

Explanation

Sonar stands for "Sound Navigation and Ranging."

It uses high-frequency sound waves (ultrasonic waves) to detect and locate objects underwater

Explanation

In a photographic camera fitted with a convex lens, a real and inverted image is formed on the film. 

Convex lenses (also called converging lenses) always form real and inverted images when the object is placed beyond the focal point.

In a camera, the object (the scene being photographed) is positioned beyond the lens's focal point,

Ensuring that the light rays converge to form a real, inverted image on the film. 

Explanation

• Weber is the SI unit of magnetic flux.
• 
  
• ***
• DETAIL:
• Unit system--->     SI
  
• Unit of------->             magnetic flux
• Symbol------->             Wb
• Named after-------->    Wilhelm Eduard Weber
• 1 Wb in ... ...         is equal to ...
  
• SI base units----->    1 kg⋅m2⋅s−2⋅A−1
• Gaussian units----->  1×108 Mx