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Anna007 [38]
3 years ago
9

Which describes Einstein’s idea of space and time?

Physics
2 answers:
Sholpan [36]3 years ago
8 0
Time and space are both relative
max2010maxim [7]3 years ago
5 0
Time and space are both relative
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A voltage is applied to a resistor,
ladessa [460]

Answer:

Explanation:

By Ohms Law, Voltage = Current * Resistance

Keeping the voltage the same and doubling the resistance, the current will be halved.

So the new current = 1.5/2 = 0.75A

6 0
2 years ago
Examples of the period, frequency, speed of a wave in a sentence?
Kamila [148]
Hi There! :)

<span>Examples of the period, frequency, speed of a wave in a sentence?

                                Examples

•</span><span>He indicated the space behind him with a </span>wave<span> of a hand.
</span><span>
•</span><span>On land only the grass and trees </span>wave, but the water itself is rippled by the wind.

•<span>But wherever it may turn there always will be the </span>wave<span> anticipating its movement.</span>

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6 0
3 years ago
What is the average velocity of a car that travels 450 km north in 9.0 hours?
Hatshy [7]

The average velocity of a car that travels 450 km north in 9.0 h is 5.0 x 10 km/h

3 0
3 years ago
a child is stationary on a swing. The child is given a push by a parent and the child starts swinging
Nesterboy [21]

Answer:

you havent given the full question

but im guessing momentum

momentum is the quantity of motion of a moving body, measured as a product of its mass and velocity or the impetus gained by a moving object.

Explanation:

as the child is pushed, it gathers momentum as its weight allows it be pushed forward, and the velocity is the speed driven by the amount of force the parent pushes on the child whilst they are swinging. The momentum is the result of this action

the equation that links these factors together are

p = mv

p = momentum

m = mass

v = velocity

hope i got it right ._.

3 0
1 year ago
A dime is placed in front of a concave mirror that has a radius of curvature R = 0.40 m. The image of the dime is inverted and t
andrew11 [14]

Answer:

distance between the dime and the mirror, u = 0.30 m

Given:

Radius of curvature, r = 0.40 m

magnification, m = - 2 (since,inverted image)

Solution:

Focal length is half the radius of curvature, f = \frac{r}{2}

f = \frac{0.40}{2} = 0.20 m

Now,

m = - \frac{v}{u}

- 2 = -\frac{v}{u}

\frac{v}{u} = 2                  (2)

Now, by lens maker formula:

\frac{1}{f} = \frac{1}{u} + \frac{1}{v}

\frac{1}{v} = \frac{1}{f} - \frac{1}{u}

v = \frac{uf}{u - f}            (3)

From eqn (2):

v = 2u

put v = 2u in eqn (3):

2u = \frac{uf}{u - f}

2 = \frac{f}{u - f}

2(u - 0.20) = 0.20

u = 0.30 m

6 0
3 years ago
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