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earnstyle [38]
3 years ago
12

Most scientists believe the Big Bang Theory explains which of the following questions?

Physics
2 answers:
Anuta_ua [19.1K]3 years ago
8 0

Answer:

The Big Bang Theory is: How are Universe began.

kari74 [83]3 years ago
5 0
A how our planets and moons formed
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You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.
Monica [59]

a)You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.

from above statement we got

height = 78.4 m

since the ball is thrown, so its vertical velocity would be zero

u = 0

taking g = 9.8m/s^2

now, using the equation of motion

h = ut + gt^2/2

now putting all the values in it

we got ,

78.4 = 9.8 * t^2/ 2

by solving we got,

t = 4 sec

b) now, since along the horizontal , no force acting and accelaration is zero so

R = ut , R is RANGE

R = 5 * 4

range =  20 m

c)  vertical components of the stone’s velocity just before it hits the ground = v sin θ =

horizontal   components of the stone’s velocity  just before it hits the ground = v cos θ

To know more about velocity  visit :

brainly.com/question/18084516

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4 0
1 year ago
a small insect viewed through a convex lens is 2.5 cm from the lens and appears 2.5 times larger than its actual size. part a wh
Amiraneli [1.4K]

The lens' focal length is 1.5 cm, and its focal length is equal to half its radius of curvature, as shown by the formula f=R2 f = R 2, where f seems to be the focal length as well as R is indeed the radius of curvature.

<h3>What does focal length mean?</h3>

When a lens is focussed at infinity, the focal length of the lens is discovered. We can determine the angle of view, or the amount of the scene will be caught, and the magnification, or how big the individual elements will be, by measuring the focal length of the lens. A narrower field of view and a higher magnification result from a longer focal length.

<h3>How do focal length or wavelength work?</h3>

As wavelength and refractive index are inversely connected, the focal length of a lens varies inversely with each of them. The focal length of a lens varies directly with wavelength of light employed. The main reason chromatic aberration occurs is due to this. No relationship exists between the focal length and the frequency of a light.

To know more about focal length visit:

brainly.com/question/16188698

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5 0
1 year ago
In class I mentioned that we used to show an actual ballistic pendulum where a rifle is shot into a heavy block to see how the b
Len [333]

Answer:

0.66 m/s

Explanation:

This is an inelastic collision, for that reason the conservation of momentum law allows us to determine the final velocity of both, the bullet and block together after the collision:

m_{bullet} v_{bullet0} +m_{block} v_{block} =(m_{bullet}+m_{block})v_{f} \\v_{f} =\frac{m_{bullet} v_{bullet0} }{m_{bullet}+m_{block}} \\v_{f} =\frac{0.0047kg*678m/s}{4.8kg+0.0047kg}\\v_{f} =0.66 m/s

3 0
3 years ago
If an object is projected upward from ground level with an initial velocity of 160 ft per​ sec, then its height in feet after t
sesenic [268]

Answer:

Time will be 5 sec

And maximum height will be 1200 feet    

Explanation:

We have given that initial velocity of the object u = 160 ft/sec'

Function of height s(t)=-16t^2+160t

Take derivative of the distance

We know that first derivative of distance is velocity

So v(t)=-32t+160

At maximum height we know that velocity is zero

So -32t+160=0

t = 5 sec

So it will take 5 sec to reach maximum height

Now maximum height will occur at t = 5 sec

So maximum height = 16\times 5^2+160\times 5=1200feet

7 0
3 years ago
A toy airplane, flying in a horizontal, circular path, completes 10. complete circles in 30. seconds. If the radius of the plane
algol [13]

Answer:

06

Explanation:

6 0
2 years ago
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