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3 years ago

a carbon atom with 6 proton and 6 neutron in its nucleus is called carbon-12 the carbon atom with 8 neutrons is called what

Physics

1 answer:

daser333 [38]3 years ago

4 0

Answer:

carbon-14 must be the answer

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A large crate is pushed across the floor with an effort of 45 Newtons. The box is pushed a distance of 3.5 meters. How much work

I am Lyosha [343]

Answer:

$\boxed {\boxed {\sf 157.5 \ Joules }}$

Explanation:

Work is equal to the product of force and distance.

$W=F*d$

The box is being pushed with an effort (force) of 45 Newtons and the distance is 3.5 meters.

$F= 45 \ N \\d= 3.5 \ m$

Substitute the values into the formula.

$W= 45 \ N * 3.5 \ m$

Multiply.

$W= 157.5 \ N*m$

1 Newton meter is equal to 1 Joule
Our answer of 157.5 N*m equals 157.5 J

$W= 157.5 \ J$

<u>157.5 Joules </u> of work are done on the crate.

3 0

3 years ago

Seatbelts are necessary to prevent your body from flying out of a vehicle during a crash. why does your body not stop with the c

Svetlanka [38]

Because you are separate from the car.

6 0

4 years ago

When you polish a window with a dry cloth on a dry day it becomes dusty why does this not happen on a wet day

barxatty [35]

When glass is rubbed with a dry cloth, the friction creates charged static electricity; this in turn attracts small non charged particles of dust. The simplest way to put it, the dry cloth creates a static charge that attracts non charged dust particles.

3 0

3 years ago

A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 47 N. How f

Novosadov [1.4K]

Answer:

7.53 m

Explanation:

Force, F = 47 N

initial velocity, u = 0

Final kinetic energy, Kf = 354 J

Let the distance traveled by the student is s.

According to the work energy theorem,

Work done by all forces = Change in kinetic energy

Force x distance = final kinetic energy - initial kinetic energy

F x s = kf - ki

47 x s = 354

s = 7.53 m

4 0

3 years ago

Car B is following Car A and has a greater speed than Car A. the two cars are moving in a straight line and in the same directio

ElenaW [278]

Answer:

Collision force will be same in both the cases.

Explanation:

A perfectly inelastic collision is said to take place when a system loses the amount of its Kinetic Energy at its maximum. In a perfectly inelastic collision, the colliding particles stick to each other. In such a collision, kinetic energy is lost by combining the two bodies with each other.

In situation 1:

Speed of Car A, $v_{A} = 10 mph$