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2 years ago

Which of the following would increase

Physics

2 answers:

bazaltina [42]2 years ago

7 0

Answer:

1 and 3

Explanation:

1 and 3

Increasing coils increases strength

COOLING the wire would increase current flow and strength of magnet

Adding an iron core will definitely increase the strength of the electromagnet

Svetradugi [14.3K]2 years ago

7 0

(1) Increasing the number of coils (✔)

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14)

Mama L [17]

Watt is a unit for power that is also equal to J/s. We therefore need to convert the minutes to seconds first before answering. Every minute is comprised of 60 seconds. Therefore, 3 minutes are composed of 180 seconds. Multiplying the number of seconds to the given power will give us,
Work = Power x time
= (1500 J/s) x (180 s)
= 270,000 J
Therefore, the answer is letter D.

6 0

3 years ago

If a team pulls with a combined force of 4 newtons on an airplace with a mass of 36 kilograms,what is the acceleration of the ai

MatroZZZ [7]

Heya!!

For calculate aceleration, lets applicate second law of Newton:

$\boxed{F=ma}$

Δ Being Δ

F = Force = 4 N

m = mass = 36 kg

a = Aceleration = ?

⇒ Let's replace according the formula:

$\boxed{4\ N = 36\ kg * \textbf{a}}$

⇒ Clear acceleration and resolve it:

$\boxed{\textbf{a}=0,111\ m/s^{2}}}$

Result:

The aceleration is of 0,111 meters per second squared (m/s²)

Good Luck!!

5 0

3 years ago

A ship was traveling across the Atlantic Ocean. It traveled 2,000 kilometers at a rate of 40 kilometers per hour. How long did i

8_murik_8 [283]

The correct answer is D

6 0

3 years ago

Two electrons travel towards each other at 0.2 c parallel to the laboratory x-axis. What is the relative velocity of one electro

Leya [2.2K]

1) In the reference frame of one electron: 0.38c

To find the relative velocity of one electron with respect to the other, we must use the following formula:

$u'=\frac{u-v}{1-\frac{uv}{c^2}}$

where

u is the velocity of one electron

v is the velocity of the second electron

c is the speed of light

In this problem:

u = 0.2c

v = -0.2c (since the second electron is moving towards the first one, so in the opposite direction)

Substituting, we find:

$u'=\frac{0.2c+0.2c}{1+\frac{(0.2c)(0.2c)}{c^2}}=\frac{0.4c}{1+0.04}=0.38c$

2) In the reference frame of the laboratory: -0.2c and +0.2c

In this case, there is no calculation to be done. In fact, we are already given the speed of the two electrons; we are also told that they travel in opposite direction, so their velocities are

+0.2c

-0.2c

5 0

3 years ago

How does increasing the speed of a motorbike change the amount of energy in its kinetic energy store?

Gnesinka [82]

Answer:

Kinetic energy is energy in motion so therefor if you increase the velocity or in your case speed the kinetic energy also has to increase

Explanation:

4 0

3 years ago

Read 2 more answers

Which of the following would increase​

Which of the following would increase