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
Delvig [45]
2 years ago
10

A 2kg block slides down a ramp which is at an incline of 25 degrees. Friction force is 4.86N. At what incline will the box slide

at a constant velocity
Physics
1 answer:
ehidna [41]2 years ago
6 0

The coefficient of kinetic friction between the block and the incline will be 0.133.

<h3>What is the cofficient of kinetic friction?</h3>

The ratio of the greatest kinetic friction force (F) between the surfaces in contact during movement begins to the normal (N) force is the coefficient of kinetic friction.

The complete question is;

"A block slides down an incline of an angle of 26° with an acceleration of 2.5 m/s^2. What is the coefficient of kinetic friction between the block and the incline?"

The given data in the problem is;

The coefficient of kinetic friction,(μ)=?

The minimum angle is such that the ladder may not slip is 25 degrees.

The coefficient of kinetic friction between the block and the incline is;

tanΘ=μ

tan 25=μ

tan 25°=-0.133

μ=-0.133

Hence the coefficient of kinetic friction between the block and the incline will be 0.133.

To learn more about the cofficient of static friction refer to;

brainly.com/question/17237604

#SPJ1

You might be interested in
When a falling meteoroid is at a distance above the Earth's surface of 3.40 times the Earth's radius, what is its acceleration d
Alchen [17]

Answer:

g = 0.85 ms^{-2}

Explanation:

g = \frac{GM}{h^{2} }

were; g is the acceleration due to Earth's gravity, G is Newton's gravitation constant (6.674 x 10^{-11} Nm^{2}kg^{-2}), M is the mass of the earth (5.972 x 10^{24} kg), and h is the distance of meteoroid to the earth.

h = 3.40 x R

  = 3.40 x 6371 km

h = 21661.4 km

  = 21661400 m

Thus,

g = \frac{6.674*10^{-11}*5.972*10^{24}  }{(21661400)^{2} }

  = \frac{3.9857 *10^{14} }{4.6922*10^{14} }

  = 0.84944

g = 0.85 ms^{-2}

The acceleration due to the Earth's gravitation is 0.85 ms^{-2}.

6 0
3 years ago
A football is place kicked with a velocity having a vertical component of 12 m/s and a horizontal component of 6 m/s. Find the r
SSSSS [86.1K]

The velocity is given by:

V = √(Vx²+Vy²)

V = velocity, Vx = horizontal velocity, Vy = vertical velocity

Given values:

Vx = 6m/s, Vy = 12m/s

Plug in and solve for V:

V = √(6²+12²)

V = 13.42m/s

Now find the direction:

θ = tan⁻¹(Vy/Vx)

θ = angle of velocity off horizontal, Vy = vertical velocity, Vx = horizontal velocity

Given values:

Vx = 6m/s, Vy = 12m/s

Plug in and solve for θ:

θ = tan⁻¹(12/6)

θ = 63.4°

The resultant velocity is 13.42m/s at an angle of 63.4° off the horizontal.

6 0
4 years ago
This problem follows up on a discussion from lecture. A wind turbine with an efficiency of 45% for converting wind energy into e
Volgvan

Answer:

4.1 m

Explanation:

10 kW = 10000 W

20mi/h = 20*1.6 km/mi = 32 km/h = 32 * 1000 (m/km) *(1/3600) hr/s = 8.89 m/s

The power yielded by the wind turbine can be calculated using the following formula

P = \frac{1}{2} \rho v^3 A C_p

where \rho = 1.2 kg/m^3 is the air density, v = 8.89 m/s is the wind speed, A is the swept area and C_p = 0.45 is the efficiency

10000 = 0.5 * 1.2 * 8.89^3 * A * 0.45

10000 = 190A

A = 10000 / 190 = 52.7 m^2

The swept area is a circle with radius r being the blade length

\pi r^2 = A = 52.7

r^2 = 52.7 / \pi = 16.79

r = \sqrt{16.79} = 4.1 m

4 0
3 years ago
In a compound, the atom does or does not take on a new set of properties
disa [49]
It does take on new set of proerties
7 0
3 years ago
Prove that d1=R(d1-d2) in relative density​
yawa3891 [41]
You know I’m going to be honest I don’t feel like it
8 0
3 years ago
Other questions:
  • 600 J of work is done on a system in a process that decreases the thermal energy of the system by 300 J.
    11·1 answer
  • An automobile engine delivers 55.0 hp. How much time will it take for the engine to do 6.22 × 105 J of work? One horsepower is e
    12·1 answer
  • A ball thrown straight up climbs for 3.0 sec before falling. Neglecting air resistance, with what velocity was the ball thrown?
    8·1 answer
  • What must you do if you plan to exercise everyday
    7·2 answers
  • As you change the value of the battery voltage, how does this change the current through the circuit and the resistance of the r
    7·1 answer
  • A circuit has a current of 2.4 A. The voltage is increased to 4 times its original value, while the resistance stays the same.
    12·2 answers
  • How long will it take a sample of lead-212 (which has a half-life of 10.64 h) to decay to one-eighth its original strength?
    8·1 answer
  • A 33 kg cart rests at the top of a hill. If the cart has a PE of 4800J, what is the height of the hill?
    14·2 answers
  • What is the greatest velocity which a falling object can achieve while falling through the air?
    15·1 answer
  • The acceleration due to gravity on Earth is 9.81 m/s² [down]. A hockey puck was launched from the ice with a velocity of 26.9 m/
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!