3 years ago

A

Physics

1 answer:

Arlecino [84]3 years ago

7 0

i think the data is not complete but that's according to me

You might be interested in

A worker wants to load some bricks in to his van. there are 1000 bricks and when stacked neatly they measure 2m by 1m by 1m, wha

inessss [21]

lenddbisnwjw whwjwiwnww

8 0

3 years ago

Explain how the force of air resistance depends on an object's speed

nalin [4]

There must be a equal opposite reaction. E=mv2

8 0

3 years ago

If the path of current flow is laid out on a map, what is the map called

Keith_Richards [23]

B i hope that helps :)

8 0

3 years ago

Read 2 more answers

One heater uses 490 W of power when connected by itself to a battery. Another heater uses 250 W of power when connected by itsel

insens350 [35]

Answer:

Power will be 166.66 watt when the heater are connected in series

Explanation:

We have given power of the first heater $P_1$ = 490 watt

And power of the second heater $P_2$ = 250 watt

We know that in series connection potential difference will be same

So let the potential difference is v

Power is given by $P=\frac{V^2}{R}$

So $490=\frac{V^2}{R_1}$

$R_1=\frac{V^2}{490}=0.0020V^2$

Similarly $R_2=\frac{V^2}{250}=0.04V^2$

As resistances are connected in series so equivalent resistance $R=R_1+R_2=0.0020V^2+0.04V^2=0.006V^2$

So power $P=\frac{V^2}{R}=\frac{V^2}{0.006V^2}=166.66Watt$

6 0

3 years ago

A rock is dropped from a sea cliff, and the sound of it striking the ocean in heard 3.0.s later. If the speed of sound is 340m/s

Ahat [919]

Answer:

The answer is 1020 meters.

Explanation:

The values given by the problem are:

1. T= The falling time of the rock [Seconds]

2. H=The sound velocity constant [meter/second]

The Velocity normal formula is

V=H/T

340=H/3

340*3=H

This solution considers the physic of the traveling wave sound but not really the rock falling problem, because the problem ask for the height of the cliff not even more.

3 0

3 years ago