All categories

3 years ago

A car is traveling at 60 mph. If the rate of speed increases 4 mph each hour,

Physics

2 answers:

Sauron [17]3 years ago

6 0

Answer:

5 hours ................

Vikentia [17]3 years ago

6 0

Answer:

B=5 hrs

explanation:

becoz if you add 4 mph/hr

it will graually be 80 in 5 hrs

You might be interested in

AHH please help-

umka2103 [35]

Answer:

Radiation

Explanation:

I hope that help's

5 0

3 years ago

57:07

Reptile [31]

Answer:

v (speed) = S / t = 4 * 400 m / (6 * 60 sec) = 4.4 m/s

The average velocity is zero because there is no net vector displacement.

5 0

3 years ago

Help me please!!!!!!!!!!!!!!!

Elan Coil [88]

Answer:

Explanation:

would

6 0

3 years ago

What is transformational energy?

jenyasd209 [6]

It is the process of energy being converted into another type of energy.

6 0

3 years ago

A laser beam is incident on two slits with a separation of 0.200 mm, and a screen is placed 5.00 m from the slits. If the bright

amm1812

Answer:

632 nm

Explanation:

For constructive interference, the expression is:

$d\times sin\theta=m\times \lambda$

Where, m = 1, 2, .....

d is the distance between the slits.

The formula can be written as:

$sin\theta=\frac {\lambda}{d}\times m$ ....1

The location of the bright fringe is determined by :

$y=L\times tan\theta$

Where, L is the distance between the slit and the screen.

For small angle , $sin\theta=tan\theta$

So,

Formula becomes:

$y=L\times sin\theta$

Using 1, we get:

$y=L\times \frac {\lambda}{d}\times m$

For two fringes:

The formula is:

$\Delta y=L\times \frac {\lambda}{d}\times \Delta m$

For first and second bright fringe,

$\Delta m=1$

Given that:

$\Delta y=1.58\ cm$

d = 0.200 mm

L = 5.00 m

Also,

1 cm = 10⁻² m

1 mm = 10⁻³ m

So,

$\Delta y=1.58\times 10^{-2}\ m$

d = 0.2×10⁻³ m

Applying in the formula,

$1.58\times 10^{-2}=5.00\times \frac {\lambda}{0.2\times 10^{-3}}\times 1$

$\lambda=632\times 10^{-9}\ m$

Also,

1 m = 10⁹ nm

<u>So wavelength is 632 nm</u>

3 0

3 years ago