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zavuch27 [327]
3 years ago
5

Do you believe in aliens? Explain.

Physics
1 answer:
Mamont248 [21]3 years ago
7 0

Answer:

no

Explanation:

because if aliens wear alive they would come in England

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A crate is released from the highest point of a 12 m long ramp inclined at 60° with the horizontal. The motion is frictionless.
Darya [45]

law of conservation of mechanical energy

PE1 = Ek2

mgh=1/2mv²

h = 12 sin 60

\tt v=\sqrt{2gh}=\sqrt{2\times 9.8\times 12\times sin~60}=14.27~m/s

3 0
2 years ago
"Your are flying in Class C airspace and the controller says, "radar service is terminated". What should the transponder be set
EleoNora [17]

Answer:

Who knows

Explanation:

8 0
4 years ago
g You are blowing air into a spherical balloon at a rate of 33 cubic inches per second. Given that the radius of the balloon is
Marina CMI [18]

Answer:

\frac{3}{16\pi}in/sec

Explanation:

We are given that

\frac{dv}{dt}=3in^3/s

r=2 in when t=4 s

We have to find the rate of change of radius.

We know that

Volume of sphere=V=\frac{4}{3}\pi r^3

Differentiate w.r.t t

\frac{dV}{dt}=4\pi r^2\frac{dr}{dt}

Substitute the values

3=4\pi(2)^2\times \frac{dr}{dt}

\frac{dr}{dt}=\frac{3}{4\pi(2)^2}

\frac{dr}{dt}=\frac{3}{16\pi}in/sec

8 0
3 years ago
Can yall help me?
IceJOKER [234]

Explanation:

Ohm's law describes the relationship between voltage, current, and resistance.

V = IR

where V is voltage, I is current, and R is resistance.

A. At the original voltage:

V₁ = I₁ R₁

When the voltage is doubled and resistance stays the same:

2V₁ = I₁' R₁

Dividing the two equations:

2V₁ / V₁ = (I₁' / I₁) (R₁ / R₁)

2 = I₁' / I₁

So the new current is double the original current.

B. At the original voltage and resistance:

V₂ = I₂ R₂

When both the voltage and resistance are increased by a factor of 2:

2V₂ = I₂' (2R₂)

Dividing the two equations:

(2V₂ / V₂) = (I₂' / I₂) (2R₂ / R₂)

2 = (I₂' / I₂) (2)

1 = I₂' / I₂

So the new current is the same as the original current.

3 0
3 years ago
This is “Fusion Reactions”.<br> Please answer number 8. Thank you.
Angelina_Jolie [31]

Answer:

²₁H + ³₂He —> ⁴₂He + ¹₁H

Explanation:

From the question given above,

²₁H + ³₂He —> __ + ¹₁H

Let ⁿₐX be the unknown.

Thus the equation becomes:

²₁H + ³₂He —> ⁿₐX + ¹₁H

We shall determine, n, a and X. This can be obtained as follow:

For n:

2 + 3 = n + 1

5 = n + 1

Collect like terms

n = 5 – 1

n = 4

For a:

1 + 2 = a + 1

3 = a + 1

Collect like terms

a = 3 – 1

a = 2

For X:

n = 4

a = 2

X =?

ⁿₐX => ⁴₂X => ⁴₂He

Thus, the balanced equation is

²₁H + ³₂He —> ⁴₂He + ¹₁H

8 0
3 years ago
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