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bearhunter [10]
4 years ago
9

About how long ago did our solar system form? 3.8 billion years ago 4.6 billion years ago 5 billion years ago 13.7 billion years

ago
Physics
1 answer:
olga2289 [7]4 years ago
7 0
4.6 billion years agony
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Which has more momentum, a 2.0 kg dog at 41 m/s or a 75 kg pony at 1.0 m/s?
Nesterboy [21]

Answer:

The dog has more momentum than the pony.

Explanation:

To solve this problem, we must remember the formula for calculating momentum, which is given below:

momentum = p = m*v

where m represents the mass of the object and v represents the velocity of the object

Using this knowledge, let's calculate the momentum for the dog and the pony.

Dog: p = m*v = (2kg)*(41 m/s) = 82 kg*m/s

Pony: p = m*v = (75kg)*(1 m/s) = 75 kg*m/s

Since 82 > 75, we can conclude that the dog has more momentum.

Hope this helps!

3 0
4 years ago
Which sound waves in the electromagnetic spectrum are considered low energy waves
Mariulka [41]
Radio waves are the waves with the lowest energy in the electromagnetic spectrum. X-rays and gamma rays are the highest. Sound is not part of the electromagnetic spectrum.
7 0
3 years ago
A conducting sphere is charged up such that the potential on its surface is 100 V (relative to infinity). If the sphere's radius
Klio2033 [76]

Answer: the potental with twice larger radius 0.5* Vo ( being Vo =100V)

Explanation: In order to solve this proble, we know that teh potential due to charged sphere relative V=0 at infinity,  we have

Vo=k*Q/R  where R is the sphere radius

if we enlarge the radius to 2R the

V= k*Q/2*R = Vo/2

3 0
4 years ago
A horizontal spring on a frictionless surface has a spring constant of 10 N/m with a mass of 2kg attached to the end of the spri
Alex

Answer:

0.356 times the mass pass through equilibrium per second.

Explanation:

Given that,

Spring constant = 10 N/m

Mass = 2 kg

Stretched spring = 2m

We need to calculate the frequency

Using formula of frequency

f=\dfrac{1}{2pi}\sqrt{\dfrac{k}{m}}

Where, m = mass

k = spring constant

Put the value into the formula

f=\dfrac{1}{2\pi}\sqrt{\dfrac{10}{2}}

f=0.356\ Hz

We know that,

Hertz = cycle per second

Hence, 0.356 times the mass pass through equilibrium per second.

4 0
3 years ago
Can help slow down or stop the motion of an object
matrenka [14]
Net force can help slow down or stop the motion of an object.
6 0
3 years ago
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