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3 years ago

What is common between the quantities of area, density and speed?

Physics

2 answers:

Rainbow [258]3 years ago

5 0

Answer:

They are all s

calar quantities

Elina [12.6K]3 years ago

4 0

They are all s, calar quantities

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A lamp is connected to the power supply.

Vika [28.1K]

Answer:

There are 45 turns in the secondary coil.

Explanation:

Given that,

Input potential of the lamp, $V_{in}=5\ V$

The output potential of the lamp, $V_{out}=1.5\ V$

Number of turns in primary coil, $N_P=150$

We need to find the number of turns needed on the secondary coil. We know that the ratio for a transformer is as follows :

$\dfrac{V_{out}}{V_{in}}=\dfrac{N_s}{N_P}\\\\N_s=\dfrac{V_{out}N_P}{V_{in}}\\\\N_s=\dfrac{1.5\times 150}{5}\\\\N_s=45\$

So, there are 45 turns in the secondary coil.

5 0

3 years ago

The 6 kg block is then released and accelerates to the right, toward the 4 kg block. The surface is rough and the coefficient of

KatRina [158]

Answer:

v =3.41 m/s

Explanation:

given,

mass of block 1 = 6 Kg

mass of another block 2 = 4 Kg

coefficient of friction = 0.3

Assuming 6 Kg block is attached to the spring of spring constant 350 N/m

and distance between the two block is equal to 0.5 m

using formula

$U = \dfrac{1}{2}kx^2$

$U = \dfrac{1}{2}\times 350 \times 0.5^2$

U = 43.75 J

using conservation of energy

KE = U - f.d

where f is the frictional force acting

$\dfrac{1}{2}mv^2 = 43.75- \mu m g d$

$\dfrac{1}{2}\times 6 \times v^2 = 43.75- 0.3\times 6 \times 9.8 \times 0.5$

$v= \sqrt{11.643}$

v =3.41 m/s

4 0

4 years ago

What is the transmitted intensity of light if unpolarized light passes through a single polarizing filter and the initial intens

Gennadij [26K]

Answer:

The transmitted intensity is $I = 40 \ W/m^2$

Explanation:

From the question we are told that

The intensity of the unpolarized light $I_o = 80 \ W /m^2$

Generally for a single filter the transmitted intensity of light is mathematically evaluated as

$I = \frac{I_o}{2}$

substituting values

$I = \frac{80}{2}$

$I = 40 \ W/m^2$

4 0

3 years ago

Which of the following is an accurate statement?

weeeeeb [17]

An object's momentum will change if there is a non-zero net external force acting on it. This assertion is true.

<h3></h3><h3>What is momentum?</h3>

The momentum is defined as the product of mass and the velocity of the body. It is denoted by the letter P. It occurs due to the applied force. Its unit is Kg m/s².

p=mΔV

If there is a change in the velocity there must be a force acting on the object.

If an object is acted on by a non-zero net external force, its momentum will not remain constant. is an accurate statement.

Hence, option B is correct.

To learn more about the momentum refer to the link;

brainly.com/question/4956182

#SPJ1

7 0

2 years ago

Ocean water conducts electrical current because it contains _____.

icang [17]

<span>Ocean water conducts electrical current because it contains electrolytes. Electrolytes are good conductors of electricity, and are naturally present in appropriate amounts in bodies of water. However, pure water (without electrolytes or metals) is not a conductor of electricity. </span>

3 0

3 years ago

Read 2 more answers

What is common between the quantities of area, density and speed?​

What is common between the quantities of area, density and speed?