2 neutral metal spheres, A and B, are touching each other.
A negatively charged rod is brought near to B.
(a) Draw the charges induced on the 2 spheres.

The negatively charged rod is now brought closer to touch B.
(b) Explain why A momentarily moves away from B.

i need help with b

Answer:

C. Surface tension

What property of water allowed the paperclip to stay on the top of the water?

Surface Tension

The strong surface tension enables the paper clip float on the water, despite its much higher density which is caused by the cohesive forces between liquid molecules.

Answer:

B

Explanation:

i hope this is correct.

Answer:

a lot of oxygen with spacesuits

Answer:

I would hit it as hard as you can with the club.

Explanation:

well one thing that I like to do is hit the golf ball as hard as possible with the club.

This is because for me, when I do that, I can normally get more momentum which means I also get a farther hit.

Answer:

Explanation:

[tex] \bold{\underline{\underline{\underbrace{Answer}}}} [/tex]

5 images

Explanation:

⠀

⠀

What is reflection of light?

The reflection of light is the phenomenon in which the rays of light falls on the object and change it's path.

⠀

How image is formed in plane mirror?

When you look at the mirror the image is formed behind the mirror and it is virtual. The light from the object which reaches the mirror gets reflected back.

⠀

⠀

The formula to find the no. of images between the 2 plane mirror at any angle θ.

[tex] \sf No. \: of \: images = \frac{360 \degree}{ \theta} - 1[/tex]

According to the question the plane mirror is inclined at 60° angle.

Substituting the required values.

[tex] \sf \large \frac{ \cancel{360} \small \: \: 6}{ \cancel{60}} - 1 \\ \\ \sf \large 6 - 1 \\ \\ \boxed{ \frak{ \implies 5} }[/tex]

The 2 plane mirror will form 5 images inclined at 60° angle.

Answer:

300

Explanation:

15 * 20 = 30

15 *

20 =

——

300

This happens at Sun 's inside

This denotes to

It releases lots of solar energy which can be used to create electricity

Answer:

See below ~

Explanation:

A decrease in the ice caps causes a(n) increase in the absorption of sunlight. This cause the global temperature to rise causing more ice caps to melt. As more ice caps melt, the temperature rises. This is an example of a negative feedback loop.

A decrease in the ice caps causes a(n) increase in the absorption of sunlight. This causes the global temperature to rise causing more ice caps to melt. As more ice caps melt, the temperature rises. This is an example of a negative feedback loop.

The options are followed by

The minimum amount of water needed for bathing assuming the water begins at room temperature is 16.58kg.

When two bodies at different temperature come into contact, they share the heat through conduction. After some time, temperature of both becomes equal. This condition is said to be a body in thermal equilibrium with other.

Heat gained by the water = heat lost by the ill person

m x Cw x ΔT = M x Cp x Δt

where, mass of person M = 80kg, Cp =specific heat of body =3470, specific heat of water Cw= 4186, then mass of water m will be

m x 4186 x (37-25) =- 80 x 3470 x (37-40)

m = 16.58kg

Thus, the mass of water needed is 16.58kg.

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An electron absorbs energy and emits electromagnetic radiation based on its transition.

This is defined as a sub-atomic particle which has a negative charge. It's involved in a chemical reaction which results in the formation of new substances.

Classical physics predicted that at a high enough temperature, ultraviolet light would be emitted. instead white light was emitted resulting in the ultraviolet radiation.

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Answer:

The resistance is 2 ohms

Answer:

inverse-square law.

Explanation:

Since the area increases as the square of the distance, the brightness of the light must decrease as the inverse square of the distance.

hope this helped you!

The three principal sources of internal heat of terrestrial planets accretion and radioactivity. Option A is correct.

The term "heat transfer" refers to the movement of heat. The flow of heat across a system's boundary is due to a temperature differential between the system and its surroundings.

The three principal sources of internal heat of terrestrial planets accretion and radioactivity.

Option A is correct.

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Answer/Solution

I hope it help.

Aluminium is far powerful and reactive than hydrogen so it will displace H_2 easily.

The reaction becomes

Balanced reaction

(a)The required speed for take off will be 24.49 m/sec.

(b)The minimum length must the runway have 193 m.

Speed is defined as the rate of change of the distance or the height attained. it is a time-based quantity. it is denoted by u for the initial speed while v for the final speed. its SI unit is m/sec.

(a)The required speed for take off will be 24.49 m/sec.

From the Newtons third equation of motion;

[tex]\rm v^2 = u^2+2as \\\\ v=0+2 \times 2 \times 150 \\\\ v=\sqrt{600}\\\\ v=24.49 \ m/sec[/tex]

Hence, the required speed for take off will be 24.49 m/sec.

(b)The minimum length must the runway have 193 m.

From the Newtons third equation of motion;

[tex]\rm v^2 = u^2+2as \\\\ (27.78)^2 = 0+2\times 2 s \\\\\ s=192.93 \ m[/tex]

Hence, the minimum length must the runway have 193 m.

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Answer:

Collinear Force System: When the lines of action of all the forces of a system act along the same line, this force system is called collinear force system. Concurrent Force System: The forces when extended pass through a single point and the point is called point of concurrency.

The minimum amount of heat needed to melt it to a liquid will be 569.067 kJ.

The minimum amount of heat needed to melt it to a liquid is known as the enthalpy of fusion.

The formula for the enthalpy of the fusion is;

[tex]\rm L_f=Q/m \\\\ L_f=mCdt/m \\\\ L_f= Cdt \\\\ L_f= 899 J/kg^0C \times (660^0-27^0) \\\\ L_f= 569,067 \ J \\\\\ L_f=569.067 \ kJ[/tex]

Hence, the minimum amount of heat needed to melt it to a liquid will be 569.067 kJ.

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Answer:

A. adjust the seat so you can reach all controls

------------------------------------------------------

This is so you can reach the gas petal, break petal, steering wheel, (and other things) easier so you won't have to lean forward and it makes it easier for when you're driving. Especially if you need to quickly press your breaks, you'll be able to do this a lot faster if you're closer to them than if you had to reach in order to do so.

I hope this helped, im not the best at explaining things lol

Explanation:

1)

A) Bb BB

B) 50%

2)

A) 50%

B) b. b

B. Bb. Bb

b. bb. bb

Answer:

6 v

Explanation:

V = IR

   = 3 A * 2 ohm = 6 v

The value of x in the given right triangle in a semicircle is determined as 21.

The triangle in a semicircle is always a right angle triangle.

From the figure shown, we can say that the triangle  G J K is right triangle and m<K = 90degrees.

Given that m<K = 4x + 6, we will can use the following equation to find the value of x as shown:

4x + 6 = 90

4x = 90 - 6

4x = 84

x = 21

Thus, the value of x in the given right triangle in a semicircle is determined as 21.

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the force of gravity is proportional to the mass of an object and inversely proportional to the square of the distance between the objects.