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
ser-zykov [4K]
3 years ago
12

A 76.5 kg cross-country skier skiing on unwaxed skis along dry snow at a constant speed of 4.00 m/s experiences a force of frict

ion of -60.0 N.  What is the coefficient of friction between unwaxed skis and dry snow?
a. 0.08
b. 0.78
c. 1.28
d. 12.5
Physics
1 answer:
NeX [460]3 years ago
6 0
The force of friction = (weight) x (coefficient of friction)

Skier's weight = (mass) x (gravity) = (76.5) x (9.8) = 749.7 N

Force of friction = (749.7) x (coefficient of friction) = 60.0 N

Coefficient of friction = 60 / 749.7 = <u>0.08 </u> (rounded)

Choice-'A' is the closest choice offered.
You might be interested in
Consider to cars traveling directly towards each other. Car A has twice the mass of Car B. In order for the cars to completely s
Greeley [361]

Please mark brainliest you answer is B).

Have a good night!

7 0
3 years ago
What is the kinetic energy of a bicycle with a mass of 16 kg traveling at a velocity of 5 m/s
fenix001 [56]

Answer:

200J

Explanation:

K.E=½mv²

K.E=½×16kg×5m/s²

K.E=8kg×25

K.E=200J

4 0
2 years ago
Rose has been working as a receptionist for 20 years. One day, she receives a check in the mail for $750,000—an inheritance from
sergey [27]
The just-world phenomenon is the belief that everything that happens to an individual is due to the individual's actions; in other words, all good and all bad that an individual encounters in the world is deserved by that person. This leads to a victim being blamed with the logic that "they had it coming" and someone who encounters good fortune being praised with "they earned it". Therefore, in this scenario, people will assume that Rose's inheritance is well deserved.<span />
8 0
3 years ago
Read 2 more answers
Solar energy is a clean, renewable energy source. It is expensive to build a solar plant, but there is no fuel cost only mainten
nikdorinn [45]

Answer:

Energy production requires the setting up of a complete interconnected chain from generation of energy from the root source of the energy to the storage of the generated energy and the eventual utilization of the energy when required

Solar energy, indirectly, continues to be the main source of energy, however, the direct use of solar energy to power the systems we use in our everyday life, require the development of technologies, such as high efficiency solar cells, means of energy storage, and compatible efficient energy usage which are industrial areas that are seeing good progress but in which the current developed equipment are expensive to produce, and  due to their efficiency, are undergoing further research and development

Therefore, due to the continuous increasing improvement in solar technology which can observed, the use of the produced energy through solar is evolving, and therefore, will continue to play a continuously increasing but lower role compared to other sources of energy which have been developed to satisfactory level that can drive an industry, considering the financial investment involved

Explanation:

6 0
2 years ago
During the experiment if you could double the breakaway magnetic force with all other quantities left unchanged, what is the new
sergiy2304 [10]
There are some missing information in the question.
However, since you are talking about magnetic force, I think you refer to the Lorentz force. When a particle of charge q and velocity v is immersed in a magnetic field of intensity B, the force acting on the particle is:
F=qvBsin\theta
where \theta is the angle between the magnetic field and the direction of the particle.
Therefore, if force F is doubled, then also the velocity v must be double of its initial value:
v=2v_0
6 0
3 years ago
Other questions:
  • I NEED HELP ASAP 1.    Suppose a skydiver (mass = 75 kg) is falling toward the Earth.  When the skydiver is 100 m above the Eart
    7·1 answer
  • What is the acceleration of softball if it has a mass of 5 kg and hits the catchers glove with a force of 35 N
    7·2 answers
  • Trucks 1 and 2 are traveling at the same constant velocity but truck 1's energy due to motion is two times less than that of tru
    9·1 answer
  • A roller coaster car rapidly picks up speed as it rolls down a slope. as it starts down the slope, its speed is 4 m/s. but 3 sec
    8·1 answer
  • Moira is drawing the electric field lines around a pair of charges. One charge is positive, and the other charge is negative.
    5·1 answer
  • The blue mass is currently 4 meters away from the red mass.
    13·1 answer
  • Which is an example of radiation?
    13·2 answers
  • I need help i don’t understand
    6·1 answer
  • Explain the mode of operation of x-ray​
    13·2 answers
  • 2. Are high trade deficits a worry?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!