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3 years ago

This sheep has a

Physics

1 answer:

Evgen [1.6K]3 years ago

4 0

Answer: 28 m.

Explanation:

Using formula G.P.E = m*g*h where, m = mass, g = acceleration due to gravity and h = height.

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Two mirrors are set up at an angle of 90.0°. If light is incident on the first mirror at an angle of 34.6° from the normal, at w

oksano4ka [1.4K]

Answer:

angle of incidence for the second mirror is 55.4 degree

Explanation:

Given data;

Angle between two mirror is 90 degree

Incident angle on first mirror is 34.6 degree

For first mirror

Angle of incidence is equal to angle of reflection

34.6 degree = angle of reflection

$r_1 = 42.5 degree$

Now , for the triangle ABC [from figure]

$90 - r_1 + 90 + 90 - i_1 = 180$

$34.6 + i_1 = 90$

$i_1 = 55.4 degree$

The angle of incidence for

angle of incidence for the second mirror is 55.4 degree

4 0

3 years ago

A object is 200 miles from the center of a circle and makes a circuit every 2 hours. How fast is it moving?

Tanya [424]

Answer: 628.31 miles/h

Explanation:

The equation to calculate the average speed $s$ of an object moving in a circular path is:

$s=\frac{2 \pi r}{T}$ (1)

Where:

$r=200 miles$ is the radius of the circumference

$T=\frac{1}{f}$ is the period, which has an inverse relation with the frequency $f=\frac{1 circuit}{2 h}=0.5 h^{-1}$ . Then $T=\frac{1}{0.5 h^{-1}}=2 h$

Solving the equation:

$s=\frac{2 \pi (200 miles)}{2 h}$ (2)

$s=628.31 miles/h$ (3)

4 0

3 years ago

Static electric fields are caused by charged particles. What characterizes a positively charged particle?

sergeinik [125]

Static electric fields are caused by charged particles when the atoms which compose the particle will have the same number of electrons as protons.

Each point in space has an electric field associated with it when the charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field.

Both the electromagnetic wave produced by a radio broadcast monopole antenna and the field created in the dielectric of a parallel-plate capacitor are examples of electric fields (which create a time-varying field). Every place in space where a charge, regardless of its shape, is present is said to have an electric field, which is an electric attribute. The electric field's equation is given as E = F / Q.

To learn more about electric field please visit -
brainly.com/question/15800304
#SPJ1

8 0

2 years ago

A rolling ball will eventually come to a stop. Why does this happen?

Digiron [165]

Answer:

(D) friction from the ground changes the ball's

kinetic energy into heat

Explanation:

When a ball is roll on the ground, the electrons in the atoms on the surface of the ground push against the electrons in the atoms on the surface of your ball that is touching the ground. A rolling ball stops because the surface on which it rolls resists its motion,that is when two surfaces come in contact with each other, the surface of one tends to oppose the motion of the other. A rolling ball stops because of friction.

7 0

3 years ago

A 67 kg astronaut floating in space throws a 4.2 kg rock at 5.6 m/sec. How fast does the astronaut move backward?

stiks02 [169]

Law of conservation of momentum
67*x=4.2*5.6

5 0

3 years ago