Ask question

Ask question

All categories

3 years ago

9

Which is of the following is the best example of kinetic energy? A flagpole standing in a courtyard A motorcycle speeding up on

the highway A swimmer getting ready to dive into a pool A turtle sunning itself on a big rock

1 answer:

Igoryamba3 years ago

5 0

A motorcycle speeding up on the highway because kinetic involve movement

You might be interested in

A toroidal coil of N turns has a central radius b and a square cross section of side a. Find its self-inductance.

Xelga [282]

Answer:

$L = \frac{\mu_0 N^2 (a^2)}{2\pi b}$

Explanation:

As we know that magnetic field due to torroid is given as

$B = \frac{\mu_0 N i}{2\pi b}$

this is approximately constant magnetic field along the axis of the torroid

now the flux linked with one coil of the torroid is given as

$\phi = B.A$

$\phi = \frac{\mu_0 N i}{2\pi b}(a^2)$

now total flux of N number of coils is given as

$\phi_{total} = \frac{\mu_0 N^2 i(a^2)}{2\pi b}$

now we know that self inductance is the property of coil in which flux of the coil will link with the current in the coil

So we know that

$L = \frac{\phi}{i}$

$L = \frac{\mu_0 N^2 (a^2)}{2\pi b}$

3 0

2 years ago

Only negative charges move<br><br> True<br><br> False

Flura [38]

The answer is False, pls. mark me the brainliest if I’m right. THX

7 0

2 years ago

Read 2 more answers

A system of two paint buckets connected by a lightweight rope is released from rest with the 12.0-kg bucket 2.00 m above the flo

NISA [10]

Explanation:

The given data is as follows.

Mass of small bucket (m) = 4 kg

Mass of big bucket (M) = 12 kg

Initial velocity ( $v_{o}$ ) = 0 m/s

Final velocity ( $v_{f}$ ) = ?

Height $H_{o} = h_{f}$ = 2 m

and, $H_{f} = h_{o}$ = 0 m

Now, according to the law of conservation of energy

starting conditions = final conditions

$\frac{1}{2}MV^{2}_{o} + Mgh_{o} + \frac{1}{2}mv^{2}_{o} + mgh_{o} = \frac{1}{2}MV^{2}_{f} + Mgh_{f} + \frac{1}{2}mv^{2}_{f} + mgh_{f}$

$\frac{1}{2}(12)(0)^{2} + (12)(9.81)(2) + \frac{1}{2}(4)(0)^{2} + (4)(9.81)(0) = \frac{1}{2}(12)V^{2}_{f} + (12)(9.81)(0) + \frac{1}{2}(4)V^{2}_{f} + (4)(9.81)(2)$

235.44 = $8V^{2}_{f}$ + 78.48

$V_{f}$ = 4.43 m/s

Thus, we can conclude that the speed with which this bucket strikes the floor is 4.43 m/s.

3 0

2 years ago

Most stars in the Milky Way's halo are _________. blue or white in color very young very old found inside molecular clouds

Alina [70]

Answer:

Most stars in the Milky Way's halo are <u>very old</u>

<u>very oldThere is no recycling of gas in the halo, so halo stars are quite old.</u>

6 0

1 year ago

Skin sensitivity may not include:<br> a. Touch<br> b. Hearing<br> c. Pain<br> d. Temnerature

Aleonysh [2.5K]

Skin sensitivity may not include hearing

7 0

2 years ago

Read 2 more answers