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salantis [7]
3 years ago
13

How is power defined?

Physics
2 answers:
erastova [34]3 years ago
6 0

d. the rate at which work is accomplished

kumpel [21]3 years ago
5 0

D is the answer to this question. Hope this helps!

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Two objects gravitationally attract with a force of 100 N. If the mass of one object is doubled and the mass of the other object
barxatty [35]

Hello!

Recall the equation for gravitational force:
F_g = \frac{Gm_1m_2}{r^2}

Fg = Force of gravity (N)
G = Gravitational constant

m1, m2 = masses of objects (kg)
r = distance between the objects' center of masses (m)

There is a DIRECT relationship between mass and gravitational force.

We are given:
F_g = 100N

If we were to double one mass and triple another, according to the equation:
F'_g = \frac{G(2m_1)(3m_2)}{r^2} = 6(\frac{G(m_1)(m_2)}{r^2}) = 6F_g

Thus:
6 * F_g = 6 * 100 = \boxed{600N}

5 0
2 years ago
Calculate the average speed of a complete round trip in which the outgoing 300 km is covered at 93 km/h , followed by a 1.0-h lu
madreJ [45]

Answer : 63 km/h

Explanation :

Outgoing distance = 300 km.

Outgoing speed = 93 km/h.

Break time = 1 h

Return distance = 300 km

Return speed = 56 km/h

Outgoing time  = outgoing distance / outgoing speed

Outgoing time   = 300 km / 93 km/h = 3.225806451612 h

Return time  = return distance / return speed

Return time = 300 km / 56 km/h = 5.357142867142 h

Total distance =. Outgoing distance + return distance travelled

Total distance  = 300 km + 300 km = 600 km

Total time = outgoing time + break time + return time

Total time = 3.225806451612 h + 1 h+ 5. 357142867142 h = 9.582949308754 h

Average speed = total distance / total time

Average speed = 600 km / 9.582949308754 h

Average speed = 62.61120462042 km/h = 63 km/h

3 0
3 years ago
You are riding your bike to the mall. You travel the first mile in ten minutes. The last mile takes you 15 minutes. This is an e
Valentin [98]
I'm pretty sure it's D. negative acceleration
6 0
2 years ago
A barrier erected to prevent you from falling to lower levels is known as a:
Ganezh [65]
Lower levels of what?
8 0
3 years ago
What is the wavelength λλlambda of the wave described in the problem introduction? Express the wavelength in terms of the other
irakobra [83]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The wavelength is   \lambda=  \frac{2 \pi }{k}

Explanation:

From the question we are told that  

      The electric field is \= E  =  E_o  sin (kx  - wt )\r j

       The magnetic field is  \= B  =  B_0  sin  (kx  -wt) \r k

From the above equation

and  k is the wave number which is mathematically represented as

        k  =  \frac{2 \pi }{\lambda }

=>     \lambda=  \frac{2 \pi }{k}

Where \lambda is the wavelength

3 0
3 years ago
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