All categories

3 years ago

How to derive the formula w = m×g

Physics

1 answer:

Anika [276]3 years ago

6 0

W=mxg is derived by f=mxa

where f-force

m=mass

a=acceleration

due to gravity when the object fall down due to gravity it becomes f=mxg

as we need to find the weight of the object we need put w (weight) in the place of f (force) so it become

w=mxg

You might be interested in

20. There are two electrical devices, one is electrical kettle of 2KW-200V and

RUDIKE [14]

Electrical kettle:

P = 2 KW = 2000 W

U = 200 V

⇒ I = P/U = 2000 / 200 = 10 A

We apply the Law of Ohm:

R = U / I = 200V / 10A = 20 Ω

=======

Electrical heater:

P = 1 KW = 1000 W

U = 240 V

⇒ I = P/U = 1000 / 240 = 4,16 A

We apply the Law of Ohm:

R = U / I = 240V / 4,16A = 57,69 Ω

Answer:

The device with the highest resistance is the electric heater.

6 0

4 years ago

Answer each question yes or no. Assume the motions and currents mentioned are along the x axis and fields are in the y direction

Sergeeva-Olga [200]

(a) Does an electric field exert a force on a stationary charged object? YES ( F = Eq)

(b) Does a magnetic field do so?- NO ( F= qvB)

(d) Does a magnetic field do so? YES ( F = qvB)

(e) Does an electric field exert a force on a straight current-carrying wire? ( NO)

(f) Does a magnetic field do so? Yes

(g) Does an electric field exert a force on a beam of moving electrons? Yes

(h) Does a magnetic field do so? YeS

To know more about magnetic field visit : brainly.com/question/10353944

#SPJ4

6 0

2 years ago

During the day, Susan notices that the wind is blowing onshore at the beach. What is this called?

sammy [17]

For the answer to the question above, it is A. Sea Breeze or on shore, breeze is a gentle wind blowing from the sea toward land, that develops over bodies of water near land due to differences in air pressure created by their different heat capacity. It is a common occurrence along coasts during the morning as solar radiation heats the land more quickly than the water.

6 0

3 years ago

Read 2 more answers

Andrew kicks a ball along a straight path. The ball rolls straight forward for 13.2 meters. Then Andrew kicks the ball straight

tresset_1 [31]

Answer: 22.7 meters

Explanation: The distance traveled is how much the ball has rolled in total, this means the lenght of the path that it has followed from begining to end.

Since it first travels 13.2 meters and then 9.5 meters, if we sum this quantities:

13.2 + 9.5 = 22.7 meters

So 22.7 is the distance that the ball has traveled.

7 0

4 years ago

Parallel Plates Consider a very large conducting plate at potential V0 suspended a distance d above a very large grounded plane.

velikii [3]

Answer:

$V = \frac{V_0x}{d}$

Explanation:

Since the field lines are parallel and the electric field is uniform between two parallel plates, a test charge would experience the same force of attraction or repulsion no matter where it is located in the field,

I attached an image that could help to understand the representation of the field. The formula used to calculate it is given by,

$E= -\frac{\Delta V}{x}$ (1)