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3 years ago

7 Consider two homogeneous bodies of

Physics

1 answer:

kupik [55]3 years ago

3 0

Answer:

No, it is not necessary for them to have same mass.

Explanation:

Let both bodies have a density d1 and d2 respectively.

Since their volumes are equal V1 = V2

we know that,

density = $\frac{mass}{volume}$

Hence, d1 = $\frac{m1}{V1}$ and d2 = $\frac{m2}{V2}$

Taking the ratio of densities,we get

$\frac{d1}{d2} = \frac{m1}{m2}$

This implies that unless the bodies have same densities, the mass of the two bodies will not be same.

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5. An electrical power plant generates electricity with a current of 50 A and a potential difference of 20 000 V. In order to mi

lakkis [162]

Answer: Current = 2 A

Explanation:

Given that an electrical power plant generates electricity with a

current I = 50 A

Potential difference V = 20 000 V

The resistance R will be achieved by Ohms law formula which state that

V = IR

But the power generated will be the product of potential difference and the current

Power P = IV

P = 50 × 20000

P = 1, 000000 W

When the transformer steps up the potential difference to 500 000 V before it is transmitted

Power is always constant.

Using the formula for power again with

V = 500000

1000000 = 500000× I

Make I the subject of formula

Current I = 1000000/500000

Current I = 2 A

3 0

3 years ago

Newton’s second law relates an object’s acceleration to its mass and the net force acting on it. Does newton’s second law apply

alexgriva [62]

No, newton’s second law does not apply to a situation in which there is no net force.

<h3>What is force?</h3>

A force is a push or pull upon an object which stops or tends to stop the object and move or tends to move an object.

No, newton’s second law apply to a situation in which there is no net force because force compels the object to move in the direction in which force is applied so we can conclude that force is compulsory to move an object.

Learn more about force here: brainly.com/question/12970081

3 0

3 years ago

Sunshine Corporation is expected to pay a dividend of $1.50 in the upcoming year. Dividends are expected to grow at the rate of

grigory [225]

Answer:

$25

Explanation:

The computation of the intrinsic value of the stock is shown below:

As we know that

Intrinsic value or Price = Dividend ÷ (Cost of equity - growth rate)

where,

Cost of equity or ke is

= Risk free rate of return + beta × (Market rate of return - risk free rate of return)

= 6% + 0.75 × (14% - 6%)

= 12 %

So the intrinsic value is

= $1.50 ÷ (12% - 6%)

= $25

7 0

3 years ago

Read 2 more answers

If silicic rock is found in a core sample. What evidence does this provide about the rocks location ?

frez [133]

Answer:

The rocks location is underneath an ocean or mountain

Explanation:

Silicic rock are igneous rock rich in silica. The amount of silica that constitutes a silicic rock is usually defined as at least sixty three percent. Granite and rhyolite are the most common silicic rocks found. These are found in the magma of the Earth.

Silicic is the group of silicate magmas which crystallise a relatively small proportion of ferromagnesian silicates. The main constituents of a silicic rock will be minerals rich in silica-minerals mainly.

7 0

4 years ago

1. If a radioactive sample has a half-life one month, how much of the original sample will be left at the end of

evablogger [386]

Answer:

second month = 0.5² = 1/4 of original

third month = 0.5³ = 1/8 of original

Explanation:

4 0

3 years ago