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3241004551 [841]
4 years ago
10

Q: Why are distances in space often measured in light years?

Physics
2 answers:
marin [14]4 years ago
6 0

Answer:

the answer is b

Explanation:

Hope it helps :)

nadezda [96]4 years ago
3 0

B) Distances in space are so great that a large unit is needed
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The answer is D can someone please explain why. Question 8 btw
GenaCL600 [577]

Answer:

Resistance, R = 60 Ohms

Explanation:

Given the following data;

For the first heater;

Voltage, V = 120 V

Resistance, R = 15 Ohms

For the second heater;

Voltage, V = 240 V

To find the resistance in the second heater;

First of all, we would determine the power rating of the heaters using the formula below;

Power = voltage²/resistance

Power = 120²/15

Power = 14400/15

Power = 960 Watts

Next, we find the resistance in the second heater;

Power = V²/R

960 = 240²/R

Cross-multiplying, we have;

960R = 57600

R = 57600/960

R = 60 Ohms

7 0
3 years ago
A 2 N and an 8 N force pull on an object to the right and a 4 N force pulls on the same object to the left. If the object has a
Elden [556K]

Answer:

a = 12 [m/s²]

Explanation:

To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

ΣF = m*a

where:

ΣF = sum of forces acting on a body [N] (units of Newtons)

m = mass = 0.5 [kg]

a = acceleration [m/s²]

Let's take the direction of positive forces to the right and negative forces directed to the left

2 + 8 - 4 = 0.5*a

6 = 0.5*a

a = 12 [m/s²]

7 0
3 years ago
PLEASE HELP ASAP! <3
Dmitriy789 [7]

Answer:

C. If the masses of the objects increase, then the force between them also increases.

Explanation:

7 0
4 years ago
Read 2 more answers
A student uses a spring with a spring constant of 130 N/m in his projectile apparatus. When 56 J of
Triss [41]

Explanation:

potentional \: energy \:  =  \frac{1}{2} k {x}^{2}  \\ 56 =  \frac{1}{2}  \times 130 \times  {x}^{2}  \\  {x}^{2}  =  \frac{56}{65}  \\ x =  \sqrt{ \frac{56}{65} } meter

plz..

mark it as a brilliant answer

4 0
3 years ago
A 12 kg<br> mass is lifted to a height of 2 m. What is its potential energy<br> at this position?
Romashka-Z-Leto [24]

Answer:

Explanation:

Potential energy is the energy stored within an object, due to the object's position, arrangement or state

4 0
3 years ago
Read 2 more answers
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