All categories

3 years ago

What is a control,constant, independent variable, and a dependent variable in a science experiment?

1 answer:

7 0

A control is something you don't touch/change in a exprement, a constant is the same as the control, the independent is the one the you do vhange, the dependet is the one that you observe/ use your 5 sences with.

You might be interested in

PLEASE HELP WILL GIVE BRAINLIEST!!!!

zimovet [89]

Answer:

pelvic gridle

Explanation:

8 0

3 years ago

The electric field in a region of space increases from 0 to 2150 N/C in 5.00 s. What is the magnitude of the induced magnetic fi

Feliz [49]

To solve this problem we will use the Ampere-Maxwell law, which describes the magnetic fields that result from a transmitter wire or loop in electromagnetic surveys. According to Ampere-Maxwell law:

$\oint \vec{B}\vec{dl} = \mu_0 \epsilon_0 \frac{d\Phi_E}{dt}$

Where,

B= Magnetic Field

l = length

$\mu_0$ = Vacuum permeability

$\epsilon_0$ = Vacuum permittivity

Since the change in length (dl) by which the magnetic field moves is equivalent to the perimeter of the circumference and that the electric flow is the rate of change of the electric field by the area, we have to

$B(2\pi r) = \mu_0 \epsilon_0 \frac{d(EA)}{dt}$

Recall that the speed of light is equivalent to

$c^2 = \frac{1}{\mu_0 \epsilon_0}$

Then replacing,

$B(2\pi r) = \frac{1}{C^2} (\pi r^2) \frac{d(E)}{dt}$

$B = \frac{r}{2C^2} \frac{dE}{dt}$

Our values are given as

$dE = 2150N/C$

$dt = 5s$

$C = 3*10^8m/s$

$D = 0.440m \rightarrow r = 0.220m$

Replacing we have,

$B = \frac{r}{2C^2} \frac{dE}{dt}$

$B = \frac{0.220}{2(3*10^8)^2} \frac{2150}{5}$

$B =5.25*10^{-16}T$

Therefore the magnetic field around this circular area is $B =5.25*10^{-16}T$

3 0

3 years ago

The mass of a football player who weighs 1250N

Readme [11.4K]

Ah hah ! That depends on where he weighs 1250N, because
weight depends not only on mass but also on the local gravity.
So the same mass can have different weights in different places,
and the same weight can indicate different mass in different places.

Weight = (mass) x (acceleration of gravity) .

Note: 1250N is almost exactly 281 pounds.

-- If he weighs 1250N on Mars, then his mass is 336.8 kg.

-- If he weighs 1250N on Earth, then his mass is 127.5 kg.

-- If he weighs 1250N on the Moon, then his mass is 770.2 kg.

5 0

4 years ago

Which of the following can be used to measure wavelength on a transverse wave

Marysya12 [62]

You measure the distance between crest and crest or trough and trough

4 0

4 years ago

Mr. Smith challenged his students to create an electromagnet that will pick up more paper clips than anyone else in the class. T

aliya0001 [1]

Wrap the wire very tight around the iron nail.

5 0

3 years ago

Read 2 more answers