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3 years ago

Which part of our solar system contains the most mass?

Physics

2 answers:

Ksju [112]3 years ago

6 0

The sun holds more than 98% of ALL the mass in the solar system.

kogti [31]3 years ago

3 0

The sun contains the most mass in the solar system.

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Which of the following was not first proposed by Charles Darwin?

ira [324]

Answer:

C. Struggle for existence

Explanation:

Have a great day

6 0

3 years ago

A 20.0-kg rock is sliding on a rough, horizontal surface at 8.00 m/s and eventually stops due to friction. The coefficient of ki

Neporo4naja [7]

Answer:

$a = -1.961\,\frac{m}{s^{2}}$ , $s = 16.318\,m$ , $t = 4.079\,s$

Explanation:

The equations of equilibrium for the rock are:

$\Sigma F_{x} = -\mu_{k}\cdot N = m \cdot a$

$\Sigma F_{y} = N - m\cdot g = 0$

After some algebraic handling, the following expression is found:

$-\mu_{k}\cdot m \cdot g = m \cdot a$

$-\mu_{k}\cdot g = a$

Deceleration experimented by the rock is:

$a = - (0.2)\cdot (9.807\,\frac{m}{s^{2}} )$

$a = -1.961\,\frac{m}{s^{2}}$

The distance travelled by the rock before stopping is:

$s = \frac{(0\,\frac{m}{s} )^{2}-(8\,\frac{m}{s} )^{2}}{2\cdot (-1.961\,\frac{m}{s^{2}} )}$

$s = 16.318\,m$

And the time is:

$t = \frac{0\,\frac{m}{s}-8\,\frac{m}{s}}{(-1.961\,\frac{m}{s^{2}} )}$

$t = 4.079\,s$

5 0

3 years ago

Read 2 more answers

A projectile is fired horizontally from a gun that is 54.0 m above flat ground, emerging from the gun with a speed of 330 m/s. (

krok68 [10]

Explanation:

Given

height of building (h)=54 m

Projectile velocity=330 m/s

initial vertical velocity $(u_y)=0$

Initial horizontal velocity $(u_x)=330 m/s$

Time taken to cover vertical height of 54 m

$h=ut+\frac{gt^2}{2}$

$54=0+\frac{9.81\cdot t^2}{2}$

$t=\sqrt{\frac{54\times 2}{9.81}}$

t=3.31 s

Horizontal distance traveled in this time

$R_x=u_x\times t$

$R_x=330\times 3.31=1094.94 m$

Vertical component of velocity when it hits the ground

v=u+at

$v=0+9.81\times 3.31=32.47 m/s$

3 0

3 years ago

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is.

Sliva [168]

Adding neutron to the nucleus creates new isotopes of that element. Mass of the nucleus will increase if you add neutron to it but element will remain the same. If you add proton to the nucleus, mass of the nucleus will change but also element will also change. That is, atom of the element will change.

5 0

3 years ago

In Young's double slit experiment, 402 nm light gives a fourth-order bright fringe at a certain location on a flat screen. What

Alex777 [14]

Answer:

λ₂ = 357.3 nm

Explanation:

The expression for double-slit interference is

d sin θ = m λ constructive interference

d sin θ = (m + ½) λ destructive interference.

The initial data corresponds to a constructive interference, they indicate that we are in the fourth order (m = 4), let's look for the separation of the slits

d sin θ = m λ₁

now ask for destructive interference for m = 4

d sin θ = (m + ½) λ₂

we match these two expressions

m λ₁ = (m + ½) λ₂

λ₂ = ( m / m + ½) λλ₁

let's calculate

λ₂ = $\frac{4}{(4.000 +0.5) \ 401}$

λ₂ = 357.3 nm

7 0

3 years ago