Write any three applicataion pressure in our daily life ?

Leap years _____. happen because the Earth revolves around the sun in less than 365 days make up for the extra one-fourth day th

anzhelika [568]

The Earth takes (365 and 1/4) days to orbit the sun. That's the length of our 'year'.

Since it's not really possible to make our calendar a quarter of a day longer every year, we make the calendar a <u><em>whole</em></u> day longer every 4 years.

So "Leap years" make up for the extra one-fourth day the Earth takes to orbit the sun.

7 0

3 years ago

A man kicks the 150-g ball such that it leaves the ground at an angle of 60° and strikes the ground at the same elevation a dist

egoroff_w [7]

Answer:

$313.92\ \text{m/s}$

$47.088\ \text{kg m/s}$

Explanation:

m = Mass of ball = 150 g

$\theta$ = Angle of kick = $60^{\circ}$

$x$ = Displacement of ball in x direction = 12 m

Range of projectile is given by

$x=\dfrac{u\sin^2\theta}{2g}\\\Rightarrow u=\dfrac{2xg}{\sin^2\theta}\\\Rightarrow u=\dfrac{2\times 12\times 9.81}{\sin^260^{\circ}}\\\Rightarrow u=313.92\ \text{m/s}$

The velocity of the ball instantly after the man kicks the ball is $313.92\ \text{m/s}$

Impulse is given by

$J=mu\\\Rightarrow J=0.15\times 313.92\\\Rightarrow J=47.088\ \text{kg m/s}$

The impulse of his foot on the ball is $47.088\ \text{kg m/s}$ .

3 0

2 years ago

when he returns his hertz rent-a-rocket after one week's cruising in the galaxy, spock is shocked to be billed for three weeks'

Flura [38]

Mr. spoke is travelling with speed v = 9.4c.

Mr. spoke is apparently unknowing of theory of special relativity by Einstein. The theory states that moving clock tick slower than stationery clock.

Time elapse =∆t = 3 weeks

(In earth stationery frame)

Time ellipse= ∆t' = 1 week

(In the frame of rocket)

∆t' = ∆t'/γ

1/y² = 1 - v²/c²

∆t'²/∆t² =

=1²/3²

=1/9

c= 3×10⁸m/s

on solving above equation we get :

v = 9.4c

He was spreading around at close to the speed of light.

Experience significant time dilatation.

He is travelling with speed v = 9.4c.

To know more about special theory of relativity :

brainly.com/question/28289663

# SPJ4

4 0

1 year ago

A car slows down at -5.00 m/s² until it comes to a stop after travelling 15.0 m. What was the initial speed of the car?

lapo4ka [179]

<h2>Answer: 12.24m/s</h2>

According to <u>kinematics</u> this situation is described as a uniformly accelerated rectilinear motion. This means the acceleration while the car is in motion is constant.

Now, among the equations related to this type of motion we have the following that relates the velocity with the acceleration and the distance traveled:

$V_{f}^{2}-V_{o}^{2}=2.a.d$ (1)

Where:

$V_{f}$ is the Final Velocity of the car. We are told "the car comes to a stop after travelling", this means it is 0.

$V_{o}$ is the Initial Velocity, the value we want to find

$a$ is the constant acceleration of the car (the negative sign means the car is decelerating)

$d$ is the distance traveled by the car

Now, let's substitute the known values in equation (1) and find $V_{o}$ :

$0-V_{o}^{2}=2(-5m/{s}^{2})(15m)$ (2)

$-V_{o}^{2}=-150{m}^{2}/{s}^{2}$ (3)

Multiplying by -1 on both sides of the equation:

$V_{o}^{2}=150{m}^{2}/{s}^{2}$ (4)

$V_{o}=\sqrt{150{m}^{2}/{s}^{2}}$ (5)

Finally:

$V_{o}=12.24m/s$ >>>This is the Initial velocity of the car

5 0

2 years ago

Explain why the weather changes with the season's temperate climate zones.

diamong [38]

Environments that have moderate rainfall spread year to year with sporadic droughts. Mild and warm- leads to summer(hot) cool and cold leads the winter

3 0

3 years ago

Write any three applicataion pressure in our daily life ?​

Write any three applicataion pressure in our daily life ?