Ask question

Ask question

All categories

3 years ago

14

an artificial satellite is moving in a circular orbit of radius 36000 kilometre calculate its speed if it takes 24 hours to revo

lve around the earth

1 answer:

nata0808 [166]3 years ago

5 0

Explanation:

9420 km/hr is the correct answer

Hope this helps...☺

You might be interested in

When you’re driving a golf ball, a good "follow-through" helps to increase the distance of the drive. A good follow-through mean

Natali [406]

Answer:

$v_{f}$ = F Δt / m

Explanation:

The impulse theorem and momentum is

I = Δp

F Δt = m $v_{f}$ - m v₀

Before touching the ball is without movement, the force is represented by the kinetic energy of the club when it reaches the bottom of the path, so if this force is constant, the time [or the duration of the blow is directly proportional to the speed that the ball acquires.

$v_{f}$ = F Δt / m

The higher this speed, the greater the distance traveled.

3 0

4 years ago

What is the acceleration of an object that has a velocity of 18 m/s and is moving in a circle of radius 30m?

blsea [12.9K]

Acceleration = V^2/r = 18^2/ 30 = 10.8 m/s^2

5 0

4 years ago

Read 2 more answers

A 1,155 kg truck has a velocity of 18 m/s. What is the momentum of the truck?

77julia77 [94]

The momentum of truck is 20790 kg m/s

<em><u>Solution:</u></em>

Given that we have to find the momentum of truck

From given, 1155 kg truck has a velocity of 18 m/s

Therefore,

Mass = 1155 kg

Velocity = 18 m/s

<em><u>The momentum is given by formula:</u></em>

$p = m \times v$

Where, m is mass in kg and v is velocity in m/s

Substituting the values we get,

$p = 1155 \times 18\\\\p = 20790$

Thus momentum of truck is 20790 kg m/s

8 0

3 years ago

Which is an example of a physical change?

Lilit [14]

Answer :
b - cake baking

explanation :
because the rest of the options are changing due to chemical reactions , when you bake a cake your developing it’s actions by touching it physically

6 0

3 years ago

Read 2 more answers

A beam of light strikes a sheet of glass at an angle of 56.6° with the normal in air. You observe that red light makes an angle

Yuri [45]

Answer:

(a). Index of refraction are $n_{red}$ = 1.344 & $n_{violet}$ = 1.406

(b). The velocity of red light in the glass $v_{red} =$ 2.23 × $10^{8} \ \frac{m}{s}$

The velocity of violet light in the glass $v_{violet} =$ 2.13 × $10^{8} \ \frac{m}{s}$

Explanation:

We know that

Law of reflection is

$n_1 \sin\theta_{1} = n_2 \sin\theta_{2}$

Here

$\theta_1$ = angle of incidence

$\theta_2$ = angle of refraction

(a). For red light

1 × $\sin 56.6$ = $n_{red}$ × $\sin 38.4$

$n_{red}$ = 1.344

For violet light

1 × $\sin 56.6$ = $n_{violet}$ × $\sin 36.4$

$n_{violet}$ = 1.406

(b). Index of refraction is given by

$n = \frac{c}{v}$

$n_{red}$ = 1.344

$v_{red} = \frac{c}{n_{red} }$

$v_{red} = \frac{3(10^{8} )}{1.344}$

$v_{red} =$ 2.23 × $10^{8} \ \frac{m}{s}$

This is the velocity of red light in the glass.

The velocity of violet light in the glass is given by

$v_{violet} = \frac{3(10^{8} )}{1.406}$

$v_{violet} =$ 2.13 × $10^{8} \ \frac{m}{s}$

This is the velocity of violet light in the glass.

8 0

3 years ago