1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Semenov [28]
3 years ago
14

g Power is _________________the force required to push something the work done by a system the speed of an object the rate that

the energy of a system is transformed the energy of a system
Physics
1 answer:
Levart [38]3 years ago
4 0

Answer:

the rate that the energy of a system is transformed

Explanation:

We can define energy as the capacity or ability to do work. Power is defined as the rate of doing work or the rate at which energy is transformed. It can also be regarded as the time rate of energy transfer. In older physics literature, power is sometimes referred to as activity.

Power is given by energy/time. Its unit is watt which is defined as joule per second. Another popular unit of power is horsepower. 1 horsepower = 746 watts.

Very large magnitude of power is measured in killowats and megawatts.

You might be interested in
a body of mass 4 kg moves around a circle of radius 6 m with a constant speed of 12m/sec². calculate tw angular velocity and the
NeTakaya

Answer:

• Angular velocity is 2 m/s

• Centripetal force is 96 N

Explanation:

For angular velocity:

{ \rm{v =  \omega r}}

  • v is velocity
  • w is angular velocity
  • r is radius

{ \rm{ \omega =  \frac{v}{r} }} \\  \\ { \rm{ \omega =  \frac{12}{6} }} \\  \\  { \boxed{ \rm{ \omega = 2 \:  {ms}^{ - 1} }}}

For the centripetal force:

{ \rm{force = m { \omega}^{2}r }} \\  \\ { \rm{force = (4 \times  {2}^{2}  \times 6)}} \\  \\ { \rm{force = 96 \: newtons}}

3 0
2 years ago
Which of the following is least likely to form bonds?
Flauer [41]
Helium because it has 2/2 electrons already
4 0
3 years ago
Astronomers observe two separate solar systems each consisting of a planet orbiting a sun. The two orbits are circular and have
Oxana [17]

Answer:

(D) 3

Explanation:

The angular momentum is given by:

\vec{L}=\vec{r}\ X \ \vec{p}

Thus, the magnitude of the angular momenta of both solar systems are given by:

L_1=Rm_1v_1=Rm_1(\omega R)=R^2m_1(\frac{2\pi}{T_1})=2\pi R^2\frac{m_1}{T_1}\\\\L_2=Rm_2v_2=2\pi R^2\frac{m_2}{T_2}

where we have taken that both systems has the same radius.

By taking into account that T1=3T2, we have

L_1=2\pi R^2\frac{m_1}{3T_2}=\frac{1}{3}2\pi R^2\frac{1}{T_2}m_1=\frac{1}{3}\frac{L_2}{m_2}m_1

but L1=L2=L:

L=\frac{1}{3}L\frac{m_1}{m_2}\\\\\frac{m_1}{m_2}=3

Hence, the answer is (D) 3

HOPE THIS HELPS!!

3 0
3 years ago
A golfer hits her tee-shot due north towards the fairway. Her shot has an initial velocity of 60 m/s. A 15 m/s wind is blowing i
vovangra [49]

Answer:

c=71.4m/s

\theta=8.54\textdegree

Explanation:

From the question we are told that

Initial velocity of 60 m/s

Wind speed V_w= 15 m/s \angle  45 \textdegree

Generally Resolving vector mathematically

  sin(45\textdegree)15=10.6\\cos(45\textdegree)15=10.6

Generally the equation Pythagoras theorem is given mathematically by

c^2=a^2+b^2

c^2=10.6^2 +(10.6+60)^2

c=\sqrt{10.6^2 +(10.6+60)^2}

Therefore Resultant velocity (m/s)

c=71.4m/s

b)Resultant direction

Generally the equation for solving Resultant direction

\theta=tan^-1(\frac{y}{x})

Therefore

\theta=tan^-1(\frac{10.6}{70.6})

\theta=8.54\textdegree

7 0
2 years ago
Football helmets are made with padding that helps reduce head injuries when a player collides with an object. Which bestexplains
Vlad1618 [11]

football hemets have pads that are filled with air and thick foam so when they are hit the foam asorbs the hit and the air keeps the hard outer shell of the helmet from hiting the players head

3 0
3 years ago
Read 2 more answers
Other questions:
  • Check My Answers Please!
    6·1 answer
  • Написать сочинение на тему маленький человечек​
    13·1 answer
  • A pendulum takes .5 seconds tp complete one cycle. what is the pendulum"s period and frequency?
    7·1 answer
  • For the energy function V (x) = cos(x) for –[infinity] ≤x≤ +[infinity], find the values x=xsthat identify stable equilibria, and
    9·1 answer
  • A 120 g coconut falls 12 m. What is the kinetic energy of the coconut just before it hits the ground?
    13·1 answer
  • As its speed increases, what happens to its energy of motion?
    5·1 answer
  • The mass of a string is 2.00 10-3 kg, and it is stretched so the tension in it is 225 N. A transverse wave traveling on this str
    9·1 answer
  • In order for a satellite to move in a stable circular orbit of radius 6588km at a constant speed, its centripetal acceleration m
    14·1 answer
  • The yield strength for an alloy that has an average grain diameter of 4.5 x 10-2 mm is 109 MPa. At a grain diameter of 6.8 x 10-
    10·1 answer
  • PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (30pts)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!