4 years ago

What is one clam that supports global warming

Physics

1 answer:

krok68 [10]4 years ago

3 0

The answer would be B

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Calculating work for different springs Calculate the work required to stretch the following springs 0.5 m from their equilibrium

Rina8888 [55]

Answer:

Part a)

U = 31.25 J

Part b)

U = 312.5 J

Explanation:

Part A)

A spring that requires a force of 50 N to be stretched 0.2 m from its equilibrium position.

So here we have

$F = kx$

$50 = k(0.2)$

k = 250 N/m

now the energy stored in the spring is given by

$U = \frac{1}{2}kx^2$

$U = \frac{1}{2}(250)(0.5)^2$

$U = 31.25 J$

Part B)

A spring that requires 50 J of work to be stretched 0.2 m from its equilibrium position.

So here we know the formula of spring energy as

$U = \frac{1}{2}kx^2$

$50 = \frac{1}{2}k(0.2)^2$

$k = 2500 N/m$

now by the formula of energy stored in spring

$U = \frac{1}{2}kx^2$

$U = \frac{1}{2}(2500)(0.5)^2$

$U = 312.5 J$

6 0

3 years ago

Sea level is currently rising at 3.3 mm/yr, and scientists predict that global warming could cause a rise in sea level of 7 m if

olga2289 [7]

Answer:

A. 2,121 years

Explanation:

This question can be looked at as a speed and distance question where 3.3 mm/yr is the speed and 7 m is the distance. So as the formula normally goes;

time = distance/speed

= $\frac{7 m}{3.3mm/yr} =\frac{7m}{0.0033m/yr} = 2121 years$

Please note that it was important to change the rate of rising of the sea from mm/year to m/year because the distance was in metres

5 0

3 years ago

27N-(u)(14kg)(9.8m/s^2)=0

atroni [7]

If u is about 0.2 (no unit) then the whole left side is zero.

4 0

4 years ago

does the wavelength of the sound increase, decrease, or stay the smae as the musician changes from the first sound to the second

Naya [18.7K]

Decrease K k kk kk k k k

8 0

3 years ago

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Mass = 10Kg<br> velocity = 5m/s<br> what is the kinetic energy = ? Joules

nirvana33 [79]

Answer:

Hello There!!

Explanation:

You use the formula:K.E. = 1/2 m v2.

kinetic energy=1 / 2 × 10 × 5 ²(the power of 2 means you multiply the number by itself)

half of 10 is 5 so you do 5×5².

kinetic energy=5×5²=(5×5=25) so 25×5=125 Joules.

hope this helps,have a great day!!

~Pinky~

5 0

3 years ago

Read 2 more answers