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bija089 [108]
3 years ago
5

Almost everything in the universe orbits around a central object. The planets orbit the sun and moons orbit planets. The force M

OST responsible for these orbits is
Physics
2 answers:
vovangra [49]3 years ago
5 0
Gravity. The reason the planets are stuck in the sun's orbit is that smaller things get pulled to larger things.
DanielleElmas [232]3 years ago
3 0
Gravity is why orbits are happening.
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The average diameter of one tennis ball in a package of three is 6.8 cm. Which of the following is the combined volume of all th
Crank

We want to find the combined volume of 3 tennis balls. We will get that the combined volume is 493.7 cm^3

First, remember that for a sphere of diameter D, the volume is:

V = \frac{4}{3}*3.14*(\frac{D}{2})^3

Where 3.14 is pi.

Here we know that the average diameter of a tennis ball is 6.8cm, then we can replace that in the above equation to find the volume (in average) of a single tennis ball:

V = \frac{4}{3}*3.14*(\frac{6.8cm}{2})^3 = 164.5 cm^3

Now, in 3 balls of tennis, the combined volume will be 3 times the above one, this is:

3*V = 3*164.5cm^3 = 493.7 cm^3

If you want to learn more about volumes, you can read:

brainly.com/question/10171109

4 0
2 years ago
A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. it suddenly collides directly with a stationary seal of m
Sphinxa [80]

M = mass of the whale = 1000 kg

m = mass of the seal = 200 kg

V = initial velocity of whale before collision with the seal = 6.0 m/s

v = initial velocity of the seal before collision with the whale = 0 m/s

V' = final velocity of two sea creatures after collision = ?

Using conservation of momentum

M V + m v = (M + m) V'

inserting the above values in the equation

(1000 kg) (6.0 m/s) + (200 kg) (0 m/s ) = (1000 kg + 200 kg) V'

6000 kgm/s + 0 kgm/s = (1200 kg) V'

V' = (6000 kgm/s ) /(1200 kg)

V' = 5 m/s

3 0
3 years ago
Read 2 more answers
What would happen to Earth if it stopped in its orbit around the sun?
erica [24]
It would crash into the sun
6 0
3 years ago
Read 2 more answers
You use a wedge that has a width of 1.1 in and a slope length of 3.3 in. What
xxTIMURxx [149]

Answer:

D. 3

Explanation:

First of all the mechanical advantage of a wedge is defined as the ratio of its slope length to its width.

Mathematically,

IMA = \frac{L}{W}

where,

IMA= Mechanical Advantage

L= slope length, and

w= width.

Given that,

slope length, L= 3.3 inches, and

width ,W= 1.1 inches

Then,

Mechanical Advantage, IMA

=  \frac{3.3}{1.1} = 3

3 0
3 years ago
A hydraulic cylinder on an industrial machine pushes a steel block a distance of x feet (0 ≤ x ≤ 6), where the variable force re
strojnjashka [21]

Answer:

W = 1080.914 J

Explanation:

f(x) = 1100xe⁻ˣ

Work done by a variable force moving through a particular distance

W = ∫ f(x) dx (with the integral evaluated between the interval that the force moves through)

W = ∫⁶₀ 1100xe⁻ˣ dx

W = 1100 ∫⁶₀ xe⁻ˣ dx

But the integral can only be evaluated using integration by parts.

∫ xe⁻ˣ dx

∫ vdu = uv - ∫udv

v = x

(dv/dx) = 1

dv = dx

du = e⁻ˣ dx

∫ du = ∫ e⁻ˣ dx

u = -e⁻ˣ

∫ vdu = uv - ∫udv

∫ xe⁻ˣ dx = (-e⁻ˣ)(x) - ∫ (-e⁻ˣ)(dx)

= -xe⁻ˣ - e⁻ˣ = -e⁻ˣ (x + 1)

∫ xe⁻ˣ dx = -e⁻ˣ (x + 1) + C (where c = constant of integration)

W = 1100 ∫⁶₀ xe⁻ˣ dx

W = 1100 [-e⁻ˣ (x + 1)]⁶₀

W = 1100 [-e⁻⁶ (6 + 1)] - [-e⁰ (0 + 1)]

W = 1100 [-0.0173512652 + 1]

W = 1100 × (0.9826487348)

W = 1080.914 J

Hope this Helps!!!

5 0
3 years ago
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