Calculate the Earth's linear momentum, in kilogram meters per second.

pickupchik [31]

When a police officer is trying to decide if a driver is speeding, what is his point of reference. The speed limit

4 0

3 years ago

6. What disadvantages or pitfalls might be associated with using a fa ce book classroom page? Name at least two and discuss why

Novosadov [1.4K]

Answer:

poultion and canser

Explanation:

4 0

3 years ago

6.7.1 Current and Current Density A sphere of radius 10 mm that carries a charge of 8 nC =8x 10°C is whirled in a circle at the

aev [14]

Answer:

Part a)

Rate of charge flow is known as electric current

Part b)

Average current flow is

$i = 4\times 10^{-7} A$

Part c)

As we know that current density is current per unit area

$j = 1.27 \times 10^{-3} A/m^2$

Explanation:

As we know that angular frequency of rotation is

$\omega = 100\pi rad/s$

now by basic definition of electric current

Part a)

Rate of charge flow is known as electric current

$i = \frac{dq}{dt}$

so here we have

$i = \frac{Q}{T}$

$i = Qf$

Part b)

here we know that

$\omega = 2\pi f$

$100\pi = 2\pi f$

$f = 50 Hz$

now we have

$i = (8\times 10^{-9})(50)$

$i = 4\times 10^{-7} A$

Part c)

As we know that current density is current per unit area

So we have

$j = \frac{i}{A}$

$j = \frac{4\times 10^{-7}}{\pi(10\times 10^{-3})^2}$

$j = 1.27 \times 10^{-3} A/m^2$

6 0

3 years ago

If 500 J of energy were added to 1 kg of each of these samples , which would experience the LEAST temperature increase

patriot [66]

What does "which" mean ? Does it mean to pick the right one out of a list that you're hiding from us ?

There's no way we can begin to make a choice if we don't know WHAT the samples are samples OF.

I CAN give you some info, however, that will probably help you make the right choice from the hidden list that you have.

If water is on the list, then that's the answer, EXCEPT if liquid ammonia is on the list. Liquid ammonia is the only known substance on Earth that beats water as the answer to this question.

If neither liquid ammonia NOR water is on your secret list of samples, then you're on your own, Bunky.

6 0

3 years ago

Read 2 more answers

the plane of a coil of area 5 m^2 has 100 turns. The plane lies on the X-Y plane and the magnetic field of intensity 3 gauss is

Oksana_A [137]

The magnetic flux associated with the coil is 0 Wb.

Magnetic flux is the total magnetic field that travels through a specific location.

It is a very useful tool for explaining the effects of magnetic force on things in a specific location.

The magnetic flux measurement is location specific.

The magnetic flux through the coil is NBA cosα

where N is number of turns, B is Magnetic field, A is area of coil and α is the angle between normal to the area of coil and the direction of magnetic field.

Magnetic Flux = NBA cosα

We have given number of turns as 100, magnetic field as 3 and area as 5 m².

Also, the value of α will be 90°

Magnetic Flux = NBA cosα Wb

Magnetic Flux = 100 × 3 × 5 × cos90° Wb

Magnetic Flux = 100 × 3 × 5 × 0 Wb

Magnetic Flux = 0 Wb

So we can conclude that the magnetic flux through the coil is 0 wb after applying the above concept.

Learn more about Magnetic Flux here:

brainly.com/question/16234377

#SPJ10

6 0

2 years ago