All categories

4 years ago

A force acting upon an object to cause a displacement is known as:

Physics

2 answers:

Salsk061 [2.6K]4 years ago

8 0

The answer is (D) Work which can be shown in units of joules and newton-meter

jeyben [28]4 years ago

6 0

I Positive That The Answer Is D Work.

You might be interested in

Why capillary happen.

Lady bird [3.3K]

This doesn’t mark any sense

5 0

3 years ago

Early on in the story the narrator mentions the sound of wind through the wires strung overhead: "The wind in the wires took up

miv72 [106K]

Answer:

option D.

Explanation:

The correct answer is option D.

The irony is the figure of speech which represents the contradiction between what is stated and what actually the scenario is.

the statement by the poet does not have any contradictory statements.

The extended metaphor is a part of speech which is used when there is a comparison between two unlike things in the paragraph.

in the given statement of the poem, there is no comparison.

Personification is the part of speech where human quality are given to non-living things.

in the give statement wind in the wire took up the story can be taken as the human quality.

so, the statement part of speech is personification.

5 0

3 years ago

The moon doesn't fall to earth because of it's friction?

TiliK225 [7]

Answer:

The Moon does not fall towards Earth right now because Earth rotates itself. The energy from the Earth's own rotation around its axis is gradually tranferred into energy of the Moon's orbital motion. That's why the Earth's rotating speed decreases but the distance to the Moon increases.

4 0

3 years ago

Read 2 more answers

A 7.0kg skydiver is descending with a constant velocity

Vikentia [17]

Answer:

The air resistance on the skydiver is 68.6 N

Explanation:

When the skydiver is falling down, there are two forces acting on him:

- The force of gravity, of magnitude $mg$ , in the downward direction (where m is the mass of the skydiver and g is the acceleration due to gravity)

- The air resistance, $R$ , in the upward direction

So the net force on the skydiver is:

$F=mg-R$

where

m = 7.0 kg is the mass

$g=9.8 m/s^2$

According to Newton's second law of motion, the net force on a body is equal to the product between its mass and its acceleration (a):

$F=ma$

In this problem, however, the skydiver is moving with constant velocity, so his acceleration is zero:

$a=0$

Therefore the net force is zero:

$F=0$

And so, we have:

$mg-R=0$

And so we can find the magnitude of the air resistance, which is equal to the force of gravity:

$R=mg=(7.0)(9.8)=68.6 N$

6 0

4 years ago

A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with ne

gregori [183]

Answer:

The ball experiences the greater momentum change

Explanation:

The momentum change of each object is given by:

$\Delta p = m \Delta v= m (v-u)$

where

m is the mass of the object

v is the final velocity

u is the initial velocity

Both objects have same mass m and same initial velocity u. So we have:

- For the ball, the final velocity is

$v=-u$

Since it bounces back (so, opposite direction --> negative sign) with same speed (so, the magnitude of the final velocity is still u). So the change in momentum is

$\Delta p=m(v-u)=m((-u)-u)=-2mu$

- For the clay, the final velocity is

$v=0$

since it sticks to the wall. So, the change in momentum is

$\Delta p = m(v-u)=m(0-u)=-mu$

So we see that the greater momentum change (in magnitude) is experienced by the ball.

3 0

3 years ago