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
Alexxandr [17]
3 years ago
14

What is a metric unit for energy?

Physics
1 answer:
Vilka [71]3 years ago
8 0
Joule (J) is the metric unit for energy
You might be interested in
A) 1.2-kg ball is hanging from the end of a rope. The rope hangs at an angle 20° from the vertical when a 19 m/s horizontal wind
Marat540 [252]

Answer:

Part a)

F_v = 4.28 N

Part B)

L = 1.02 m

Part C)

v = 1.25 m/s

Explanation:

Part A)

As we know that ball is hanging from the top and its angle with the vertical is 20 degree

so we will have

Tcos\theta = mg

T sin\theta = F_v

\frac{F_v}{mg} = tan\theta

F_v = mg tan\theta

F_v = 1.2\times 9.81 (tan20)

F_v = 4.28 N

Part B)

Here we can use energy theorem to find the distance that it will move

-\mu mg cos\theta L + mg sin\theta L = -\frac{1}{2}mv^2

(-(0.37)m(9.81) cos15 + m(9.81) sin15)L = - \frac{1}{2}m(1.4)^2

(-3.5 + 2.54)L = - 0.98

L = 1.02 m

Part C)

At terminal speed condition we know that

F_v = mg

bv^2 = mg

2.5 v^2 = 3.9

v = 1.25 m/s

7 0
2 years ago
A motorcycle is moving at a constant velocity of 15 meters/second. Then it starts to accelerate and reaches a velocity of 24 met
Tanya [424]

option E

3m/s square

hope it helped u

6 0
2 years ago
Find the Input force, if the Mechanical Advantage of the simple machine used is 5 and Output force is 50 N.
galina1969 [7]

Answer:

6N

Explanation:

6 0
3 years ago
True or False: If the initial speed of an object is zero, then the initial position of the object must be the origin. Explain
lions [1.4K]

Answer:

False

Explanation:

It is not necessary, that when the initial speed of the object is zero then it must be at origin.

It may be the object starts motion from the left of origin.

4 0
2 years ago
A ball is thrown upward. The total time the ball remains in the air is 14 s. a) With what speed was the ball thrown upward? b) W
wolverine [178]

Answer:

a) Vi = 137.2 m/s

b) h = 960.4 m

Explanation:

a)

In order to find the initial speed we will use first equation of motion:

Vf = Vi + gt

where,

Vf = Final velocity = 0 m/s (since ball stops at highest point)

Vi = Initial Velocity = ?

g = - 9.8 m/s² (negative sign for upward moyion)

t = time interval = 14 s

Therefore,

0 m/s = Vi + (-9.8 m/s²)(14 s)

<u>Vi = 137.2 m/s</u>

<u></u>

b)

Now, we use second equation of motion to find height (h):

h = Vi t + (1/2)gt²

h = (137.2 m/s)(14 s) + (1/2)(-9.8 m/s²)(14 s)²

h = 1920.8 m - 960.4 m

<u>h = 960.4 m</u>

5 0
3 years ago
Other questions:
  • Astrology is the study of the Earth, Moon, and Stars in space. true or false
    11·2 answers
  • What are the three fields E⃗ 1E→1, E⃗ 2E→2, and E⃗ 3E→3 created by the three charges? Write your answer for each as a vector in
    8·1 answer
  • Most cars have a coolant reservoir to catch radiator fluid that may overflow when the engine is hot. A radiator is made of coppe
    14·1 answer
  • A fan blade rotates with angular velocity given by ωz(t)= γ − β t2, where γ = 4.90 rad/s and β = 0.750 rad/s3 . part a calculate
    10·2 answers
  • Which of the following electromagnets is the strongest? Why?​
    6·1 answer
  • how do i write this to where it is true? in the blue is a statement and the attached piece is false so i have to make it true an
    8·1 answer
  • The maximum tensile force a solid, cylindrical wire can withstand increases as the thickness of the wire increases.
    8·1 answer
  • A gazelle is running at 17.46 m/s. He sees a lion and accelerates at -1.49 m/s/s,
    15·2 answers
  • Adding resistors in series changes the total resistance of a circuit by
    6·1 answer
  • An electric drill rated at 400 W is connected to a 240V power line. How much current does it draw?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!