IWhat is your mass in kilograms of you weigh 120 pounds?

Answers

Answer 1

Answer: One pound is (around, actually it's a little more, but you have to round it down to make the number practically usable) 0.45 kilograms, so 120 pounts is 120* 0.45, which is around 54kg.

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Several teenagers swim toward a rectangular, wooden raft that is 2.00 m wide and 2.50 m long. If the raft is 9.80 cm thick, how many 75.0 kg teenage boys can stand on top of the raft without the raft becoming submerged? Assume the wood density is 650 kg/m3.

Answers

Answer:

Explanation:

length of the raft, L = 2 m

Width of the raft, W = 2.5 m

height of the raft, H = 9.8 cm = 0.098 m

mass of each person, m = 75 kg

Density of wood = 650 kg/m^3

volume of raft, V = L x W x H = 2 x 2.5 x 0.098 = 0.49 m^3

let there are N persons

According to the principle of floatation

Buoyant force acting on the raft = True weight of the raft

Volume x density of water x g = volume x density of wood x g + N x mg

0.49 x 1000 x g = 0.49 x 650 x g + N x 75 x g

490 = 318.5 + N x 75

N = 2.28

So, the maximum number of person is 2.

This theory suggests that for every big bang, there is a big crunch.oscillating universe theory
inflation theory
steady state theory
big bang theory

Answers

Answer: oscillating universe theory

Explanation:

The oscillating universe theory is a modification of the famous big bang theory.
According to this theory, there are successive cycles of expansion and contraction that occurs in the universe and due to the contraction, the universe gets confined into a very small volume which has a large density.
When the universe gets confined in such a way then, it is said that a 'bounce' will occur and, it would thus oscillate between the big bang and the big crunch.
Thus, this theory states that for every big bang there is a big crunch.

Final answer:

The Oscillating Universe Theory suggests that for every big bang there is a big crunch, imagining the universe as undergoing endless cycles of expansion and contraction.

Explanation:

The theory that suggests that for every big bang, there is a big crunch is known as the oscillating universe theory. This theory proposes that the universe undergoes endless cycles of expansion (Big Bang) and contraction (Big Crunch). It's like a ongoing cosmic heartbeat, where our universe alternatively expands and contracts.

The other three theories mentioned, the inflation theory, the steady state theory, and the big bang theory, each have their own illustrations of the universe's formation. None of them, however, necessarily involve the concept of a big crunch following a big bang.

Learn more about Oscillating Universe Theory here:

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Change the following data into scientific notation.

5 000 000 km

Answers

To find out scientific notation, you want to make sure that number is less than 10. So do 5.000000, you don't rally need the zeros but I just want to make my point. So use 10^x meaning ten the whatever power adds zeros like 5.000000x10^6 meaning it is increasing it by six zeros moving it out of the decimals and letting become 5,000,000.

Answer:

the answer is B) 5x10^6

Explanation:

brainliest please

Is it possible for a population with a high birth rate to decrease in size.

Answers

Sure, if the mortality (death) rate is even higher than the birth rate.

What is the focal length of a lens?A.
the distance between the object and the image
B.
distance between the object and the center of the lens
C.
the distance between the center of the lens and the image
D.
the distance between the focal point and the center of the lens

Answers

Answer is D.the distance between the focal point and the center of the lens.

Answer:

it is B i took the test and got it wrong when someone said it was A

Explanation:

it is the one that says the sizing of the objects will appear unusual

An object placed in water will float if the weight of the object is MORE THAN the buoyant force of the water.True
False

Answers

False

If the object weighs more than the buoyant force then the object will sink.

This is because the buoyant force "pushes" the object upwards and the weight of the object "pushes" the object downwards. Since the force downwards is greater than the force upwards the item will sink, so this statement is False.

~~~Brainliest would be appreciated~~~

I think the answer is true

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