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Naddik [55]
4 years ago
6

Collisions between galaxies are thought to:

Physics
1 answer:
dimaraw [331]4 years ago
3 0
The bigger galaxy survives the smaller one gets eaten up
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Ocean waves contain energy that can be caused by
Maru [420]
The movement of the waves themselves
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3 years ago
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An electrician must decide between 3 heaters. The wire that she is using is rated 15A maximum, anything beyond that is a fire ha
lutik1710 [3]
Use the formula: P=IV, where P is power (watts), I is current (amperes) and V is potential difference (volts).

For the first heater:
900W = I_{1}*120V
I_{1} = 7.5A


For the second heater:
1800W = I_{2}*120V
I_{2} = 15A


For the third heater:
3000W = I_{3}*240V
I_{3} = 12.5A
6 0
3 years ago
The velocity of a particle is given by v=20t² - 100t + 50, where v is in meters per second and t is in seconds. Evaluate the vel
allochka39001 [22]

Explanation:

It is given that,

The velocity of a particle is given by :

v=20t^2-100t+50

Where

v is in m/s and t is in seconds

Let a is the acceleration of the object at time t. So,

a=\dfrac{dv}{dt}

a=\dfrac{d(20t^2-100t+50)}{dt}

a=40t-100

When a = 0

40t-100=0

t = 2.5 s

a is zero at t = 2.5 s. Velocity, v=20(2.5)^2-100(2.5)+50

v = -75 m/s

Since, v=\dfrac{ds}{dt}, s is the distance travelled

s=\int\limits{vdt}

s=\int\limits{(20t^2-100t+50)dt}

s=\dfrac{20t^3}{3}-50t^2+50t

At t = 2.5 s, s=\dfrac{20(2.5)^3}{3}-50(2.5)^2+50(2.5)

s = −83.34 m

Hence, this is the required solution.

5 0
3 years ago
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At divergent boundaries, hot mantle rock rises and<br> occurs.
andrey2020 [161]
The answer is decompression melting
5 0
3 years ago
A metal rod of length 2.0 m is moved at 6.0 m/s in a direction perpendicular to its length. A 5.0 mT magnetic field is perpendic
Lerok [7]

Answer:

<h2>The potential difference is 60mV</h2>

Explanation:

 This problem bothers on  application of the expression for motion emf which is expressed as

E= Blv

where B= magnetic field in Tesla

           l= length of the conductor

           v= speed of conductor

Given data

l= 2 meters

v= 6 m/s

B= 5 Tesla

Applying the formula we have

E=5*2*6= 60mV

7 0
3 years ago
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