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2 years ago

Liquid pressure does not depend on

Physics

1 answer:

STALIN [3.7K]2 years ago

8 0

Answer:

it's answer is density of object

Explanation:

it depend on

depth

density of water

gravity

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A tablecloth can be pulled out from underneath a fully set table without breaking plates or glassware. The reason is that the ob

bekas [8.4K]

Answer:

newtons law of force

newtons law of force explains that something may or can or canot move depending on the objexts mass.

6 0

3 years ago

The engine that moves the cables for the San Francisco cable cars delivers 390.3 kW of power for each line. How long does it tak

Musya8 [376]

Answer:

It would take 16.7 s for the work to be done by the engine.

Explanation:

From the question, given: Power = 390.3 kW

Work to be done = 6.5 x $10^{6}$ J

But, power and work done with respect to time, has a relationship of:

Power = $\frac{work done}{time}$

So that,

time = $\frac{work done}{Power}$

Thus,

time = $\frac{6.5*10^{6} }{390.3*10^{3} }$

= 16.6539

time = 16.7 s

Time required is 16.7 seconds.

Thus, it would take 16.7 s for the work to be done by the engine.

5 0

3 years ago

What is the mass of the object being measured?

ioda

Answer:

m = 375 [gram]

Explanation:

A triple Beam balance is an instrument very easy to use, since we only have to perform the arithmetic sum of each of the weights that are recorded in each beam

m = 300 + 70 + 5 = 375 [gram]

For a better understanding, the following image is attached, with values on each beam, which should be read.

The largest mass is in the indicator of 100 [gram], the second mass is in the indicator of 20 [gram] and the third is in the indicator of 5.8 [gram]. Thus the arithmetic sum corresponds to:

M= 100 + 20 + 5.8 = 125.8 [gram]

Note: it is important that when the instrument is in balance, the opposite end of the beam should indicate a position of zeros.

6 0

3 years ago

A 14 kg tennis ball moves at a velocity of 11 m/s. The ball is struck by a racket, causing it to rebound in the opposite directi

Charra [1.4K]

To solve this problem we will apply the concepts related to the momentum.

This is defined as the product between the change in velocity and the mass of the object, that is

$p = m\Delta v$

$p = m (v_f-v_i)$

Where,

m = mass

$v_f =$ Final velocity

$v_i =$ Initial velocity

Our values are given as,

m = 14kg

$v_i$ = 11m/s

$v_f= - 5m/s \rightarrow$ <em>the negative Symbol implies that the direction is opposite to the initial one and therefore there is also a change in the sense of magnitude</em>

$p = (14)(-5-11)$

$p = 14(-16)$

$p = -224 kg \cdot m/s$

The negative symbol indicates that the momentum has a direction opposite to that of the initial velocity. Or failing that, it has the same direction of the final speed

7 0

3 years ago

How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.4 m across a rough floor without acceleration, if the

creativ13 [48]

Answer:

The total work done by the mover is 2.81 kJ.

Explanation:

Given the 46 kg crate is displaced by 10.4 meters.

And the acceleration is zero. Also, $\mu_k=0.60$