PHYSICS
COLLEGE

Answer: The answer is frame of reference ( system ).

Frame of reference is a physical concept related to state of motion.

hoped it helped!!

Frame of reference is a physical concept related to state of motion.

hoped it helped!!

COLLEGE

The estimated mass of the planet jupiter is 1.90 × 1027 kg and the density is believed to be 1.34 g/cm3. if jupiter were a perfect sphere, what would be its diameter?

We use the formula,

Given, and .

Substituting these values, we get

.

As Jupiter were a perfect sphere, therefore the volume of sphere is given by

Here, r is the radius of sphere.

Substituting the value of volume we get

.

The diameter is twice of radius, thus the diameter of Jupiter would be

MIDDLE SCHOOL

A house is wired so that one electrical source comes to a room but many outlets and lights work from that source. When one light is turned off, the other lights in the room do not also go off. How is the room wired? a.parallel

b.series

The answer is a. parallel

The answer is A. Parallel because the other lights are not affected

COLLEGE

Two uniform solid spheres have the same mass, but one has twice the radius of the other. The ratio of the larger sphere's moment of inertia about a central axis to that of the smaller sphere is

Answer:

The ratio is 4

Explanation:

The moment of inertia of a solid sphere about a central axis is:

With m the mass and r the radius of the sphere.

For the smaller sphere with mass M and radius R the moment of inertia is:

(1)

For the bigger sphere with mass M and radius 2R the moment of inertia is:

(2)

The ratio between larger of the larger sphere's moment of inertia about a central axis to that of the smaller sphere is the ratio between (2) and (1):

The term cancels, so:

HIGH SCHOOL

Atoms seldom exist as independent particles in nature because

Answer:

Explanation:

Atom is seldom exist as independent particles in nature because when existing alone without bonding they possess high potential energy which makes them less stable compare to when they are bonding with another (it may be the same atom like oxygen gas or other atoms) which leads to them creating a more stable arrangement.