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MatroZZZ [7]
3 years ago
7

I WILL FAIL IF I DONT GET THIS DONE, CAN SOMEBODY PLEASE HELP ME?

Physics
1 answer:
ki77a [65]3 years ago
3 0
Plants that died a thousands of years ago. 
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What is the pooled variance for the following two samples?
Snowcat [4.5K]
I think it is B as 168/20
4 0
3 years ago
What is the volume of this bubble when it reaches the surface?
steposvetlana [31]

Answer:

Volume will be 15 mL. Solution:- If we look at the given information then it is Boyle's law as the temperature is constant and the volume changes inversely as the pressure changes. So, the volume of the air bubble at the surface will be 15 mL.

8 0
3 years ago
How long would it take a machine to do 5000 J of work if the power rating of the machine is 100 watts?
NeX [460]

Answer:

25 N; 250 W.

Explanation: Work Done

=

Force

×

Displacement

×

cos

(

The angle between Force and Displacement

)

So, Let's Assume the Force to be

x

Newtons.

So, According to The Sum,

×

x

x

⋅

100

=

2500

⇒

x

=

25

00

1

00

=

25

So, The force was

25

N

.

And, We also know,

Power

=

Work Done

Time

So,

The Power of the Machine =

2500

10

Watts

=

250

Watts

4 0
4 years ago
If a surplus exists, then quantity demanded is less than quantity supplied; there will be pressure on price to _____ toward equi
ludmilkaskok [199]

If a surplus exists, then quantity demanded is less than quantity supplied, there will be pressure on price fall toward equilibrium.

When the quantity of supply of goods matches the demands for goods, it is called the equilibrium price. The market is said to be in a state of equilibrium when the main situation is in the phase of consolidation. Then, it can be concluded that demand and supply are comparatively equal. Equilibrium price examples are discussed below as well.

We can find the equilibrium price by using the equilibrium price formula. These are the steps:

  • Calculate the supply function,
  • Calculate the demand function,
  • Set the equal amount of quantities for the demand and supply,
  • Put this equilibrium price into a supply function,
  • Check the result by putting the equilibrium price into the demand function.

A surplus implies the government has extra funds. These funds can be used toward public debt, to start new events, social service or Medicare service and also in reducing interest rates which can help the economy.

To learn more about Equilibrium, head here

brainly.com/question/13463225

#SPJ4

3 0
1 year ago
Find the de Broglie wavelength of an electron with a speed of 0.78c. Take relativistic effects into account.
Liono4ka [1.6K]

Answer:

de Broglie wavelength of an electron with speed 0.78 c taking relativistic effects into account is given as:

λ = 1.943 * 10^(-12) m

Explanation:

Given:

v = 0.78 c

we know:

c = speed of light = 3 * 10^8 m/s

mass of electron = m = 9.1 × 10-31 kg

de Broglie wavelength:

In 1924 a French physicist Louis de Broglie assumed that for particles the same relations are valid as for the photon:

(Dual-nature of a particle)

Let the wavelength be = λ

According to de Broglie:

λ = h/p = h/mv

where h is planck's constant = 6.626176 x 10^-34 Js

and p is momentum.

Taking relativistic effects into account, we know that the momentum of the particle changes by a factor 'γ'.

At low speed, γ is almost 1. However, at very high velocity (comparable to light), it has a great effect on momentum.

γ = \frac{1}{\sqrt{1-\frac{v^{2} }{c^{2} } } }

γ = 1.6

Now at 0.78 c, considering relativistic effects, we know:

λ = h/γp = h/γ*mv

= (6.62 x 10^(-34))/(1.6*0.78*3*10^(8)*9.1 × 10-31

λ = 1.943 * 10^(-12) m

4 0
3 years ago
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