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3 years ago

11

The slit of width ‘d’ is illuminated by light of wavelength 5000a0. For what value of ‘d’ will the first maximum fall at an angl

e of diffraction of 300?.

1 answer:

anygoal [31]3 years ago

8 0

Answer:

because of the gravity of the earth

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A 62.00 kg person in a 33.00 kg cart is coasting with a speed of 15 m/s before it goes up a hill.

frozen [14]

Answer:

11.47 m high

Explanation:

All of the Kinetic Energy converts to Potential energy

1/2 m v^2 = mgh divide both sides by 'm'

1/2 v^2 = gh (note that the masses given are irrelevant !)

(1/2 v^2) / g = h

(1/2 (15^2) / 9.81 = h = 11.47 m

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2 years ago

Why does the heat of the heating element stop when the desired temperature in an electric iron is reached?

Natalija [7]

The heat of the heating element stops when the desired temperature in an electric iron is reached because A. the thermostat blade opens electrical contacts.
This is why heating ceases to rise or fall (it stops completely) once the thermostat's blade opens.

8 0

3 years ago

Read 2 more answers

A 50.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300 and the

Dimas [21]

Answer:

98N and 147N

Explanation:

We have the following information:

$m=50kg\\\mu_s =0.4\\\mu_k = 0.2\\F=140N$

We can find the static fricton force as follow,

$F=\mu_s * N$

Where N is the normal force (mg)

$F=0.3*50*9.8\\F=147N$

Static friction force at 147N is greater than the force applied hence body does not move.

$F=\mu_k N = 0.2*50*9.8= 98N$

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4 years ago

True or false around 250 million year ago, all the continents were joined in one landmass, called Cambria

Xelga [282]

This should be true, howl this helps

7 0

3 years ago

Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surf

olchik [2.2K]

Answer:The gravitational field on Saturn can be calculated by the following formula;

Explanation:

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4 years ago