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3 years ago

12

Which of the following units is likely to be used while calculating the distance between two galaxies?

1 answer:

Elden [556K]3 years ago

8 0

The answer is probably light years if your looking for something specific it could also be an Astronomical unit or Distance unit but mainly look for LIGHT YEARS

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What energy does a spillway produce?

alukav5142 [94]

Answer: Energy dissipation

As water passes over a spillway and down the chute, potential energy converts into increasing kinetic energy. Failure to dissipate the water's energy can lead to scouring and erosion at the dam's toe (base).

HOPE THIS HELPS

6 0

3 years ago

Read 2 more answers

A car has a speed of 12m/s. The mass of the car and its passengers is 1250 kg. What is the total momentum of the car/passengers?

Temka [501]

Answer:

15000kgm/s

Explanation:

Given parameters:

Speed of the car = 12m/s

Mass of car and passengers = 1250Kg

Unknown:

Momentum of the car = ?

Solution:

Momentum is the quantity of motion a body posses;

Momentum = mass x velocity

Now insert the given parameters and solve;

Momentum = 12 x 1250 = 15000kgm/s

5 0

3 years ago

A 480N sphere 40.0cm in radius rolls without slipping 1200cm down a ramp that is inclined at 53 0 with the horizontal. What is t

IgorC [24]

As we know that sphere roll without slipping so there is no loss of energy in this case

so here we can say that total energy is conserved

Initial Kinetic energy + initial potential energy = final kinetic energy + final potential energy

$\frac{1}{2}mv_i^2 + mgh = \frac{1}{2}mv^2 + \frac{1}{2}I\omega^2+ mgh'$

as we know that ball start from rest

$v_i = 0$

height of the ball initially is given as

$h = Lsin\theta$

$h = 1200sin53 = 960 cm$

also we know that

$I = \frac{2}{5}mR^2$

also for pure rolling

$v = r\omega$

also we know that

$480 = m*9.8$

$m = 49 kg$

now plug in all data in above equation

$480*9.60 + 0 = \frac{1}{2}*49*(0.40*\omega)^2 + \frac{1}{2}*\frac{2}{5}*49*(0.40)^2\omega^2 + 0$

$4608 = 3.92\omega^2 + 1.568\omega^2$

$\omega^2 = 839.65$

$\omega = 29 rad/s$

So speed at the bottom of the inclined plane will be 29 rad/s

7 0

4 years ago

How does temperature change as you go from the surface toward the center of the earth?

Nastasia [14]

Because lava is in the center and lavas hot

8 0

3 years ago

A body of mass 1kg has a 25kgsmsqure moment of inertia about its center of mass. if it rotated about an axis which has a displac

ASHA 777 [7]

Answer:

194 kg m²

Explanation:

Use parallel axis theorem:

I = I₀ + mr²

I = 25 kg m² + (1 kg) ((5 m)² + (12 m)²)

I = 25 kg m² + 169 kg m²

I = 194 kg m²

6 0

3 years ago