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
Studentka2010 [4]
3 years ago
10

A floating ice block is pushed through a displacement d = (23 m) i - (9 m) j along a straight embankment by rushing water, which

exerts a force F = (200 N) i - (149 N) j on the block. How much work does the force do on the block during the displacement?
Physics
2 answers:
musickatia [10]3 years ago
4 0

Answer:

Work done, W = 5941 joules

Explanation:

It is given that,

Force exerted on the block, F=(200i-149j)\ N

Displacement, x=(23i-9j)\ m

Let W is the work done by the force do on the block during the displacement. Its formula is given by :

W=F.d

W=(200i-149j){\cdot} (23i-9j)                    

Since, i.i = j.j = k.k = 1

W=4600+1341

W = 5941 joules

So, the work done by the force do on the block during the displacement is 5941 joules. Hence, this is the required solution.

Sav [38]3 years ago
3 0

Answer:

Work = 5941 J

Explanation:

As we know that work done is given by the equation

W = F. d

here we know that

F  = (200 N)\hat i - (149 N) \hat j

also we have

d = (23m) \hat i - (9 m)\hat j

now from above formula we have

W = (200 N\hat i - 149 N \hat j).(23 m\hat i - 9m \hat j)

W = 5941 J

You might be interested in
The size of a wave is NOT affected by the
marusya05 [52]

Answer:

I think it is C: salinity of the water

Explanation:

3 0
2 years ago
How has two dogs go awnser my other qestion first one will get brainly anser
aksik [14]
Yes, yea, yep, you don't make much sense.

7 0
3 years ago
An amusement park ride called the Rotor debuted in 1955 in Germany. Passengers stand in the cylindrical drum of the Rotor as it
steposvetlana [31]

Answer:

μs = 0.36

Explanation:

  • While the drum is rotating, the riders, in order to keep in a circular movement, are accelerated towards the center of the drum.
  • This acceleration is produced by the centripetal force.
  • Now, this force is not a different type of force, is the net force acting on the riders in this direction.
  • Since the riders have their backs against the wall, and the normal force between the riders and the wall is perpendicular to the wall and aiming out of it, it is easily seen that this normal force is the same centripetal force.
  • In the vertical direction, we have two forces acting on the riders: the force of gravity (which we call weight) downward, and the friction force, that will oppose to the relative movement between the riders and the wall, going upward.
  • When this force be equal to the weight, it will have the maximum possible value, which can be written as follows:

       F_{frmax} = \mu_{s}* F_{n}  = m * g  (1)

  • where μs= coefficient of static friction (our unknown)
  • As  we have already said Fn = Fc.
  • The value of the centripetal force, is related with the angular velocity ω and the radius of the drum r, as follows:

      F_{n} = m* \omega^{2} * r  (2)

  • Replacing (2) in (1), simplifying and rearranging terms, we can solve for μs, as follows:

       \mu_{s} = \frac{g}{\omega^{2} r}  (3)

  • Prior to replace ω for its value, is convenient to convert it from rev/min to rad/sec, as follows:

       \omega = 26.0 \frac{rev}{min} * \frac{1min}{60 sec} *\frac{2*\pi rad }{1 rev} = 2.72 rad/sec (4)

  • Replacing g, ω and r in (3):
  • \mu_{s} = \frac{g}{\omega^{2} r} = \frac{9.8m/s2}{(2.72rad/sec)^{2} *3.7 m} = 0.36 (5)

3 0
2 years ago
Name the processes of going (a) from a solid to a gas and (b) from a gas to a solid.
marissa [1.9K]
The answer to the first one is sublimation.
8 0
3 years ago
Which unit is used to measure force
Ymorist [56]
Newtons (N) measure force
3 0
3 years ago
Read 2 more answers
Other questions:
  • Chemical composition describes
    8·1 answer
  • A fish swims 12.0 m in 5.0 s. It swims the first 4.0 m in 2.0 s, the next 3.0 m in 1.2 s, and the last 5.0 m in 1.8 s. What is t
    9·1 answer
  • A 128.0-N carton is pulled up a frictionless baggage ramp inclined at 30.0∘above the horizontal by a rope exerting a 72.0-N pull
    5·1 answer
  • What does the term “periodic” mean when describing motion
    7·2 answers
  • A researcher plans to conduct a study to compare two groups. Based on previous research, she anticipates a medium effect size. S
    8·1 answer
  • Nicole throws a ball straight up. Chad watches the ball from a window 6.10m above the point where Nicole released it. The ball p
    11·1 answer
  • Infared waves can be used to _____
    5·1 answer
  • What is the acceleration of a 32-kg object if a 6.75-N force is applied to it?
    9·1 answer
  • A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 4.00 m/s, and
    12·1 answer
  • a person jogs eight complete laps around a 400-m track in a total time of 15.1 min .calculate the average speed, in m/s .
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!