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
r-ruslan [8.4K]
2 years ago
14

A 10 kg block slides on a frictionless surface at 10 m/s . It hits a rough patch 3 meters long with a coefficient of kinetic fri

ction of 0.4. When it reenters the frictionless surface , how fast is it going?
Physics
1 answer:
Valentin [98]2 years ago
8 0

12 MPH

I DIDNT do the math my brother did  hes in colledge so good lucks guys

You might be interested in
The student draws an arrow on the paper to mark the incident ray. She marks the
garri49 [273]

Answer:

Explanation:

Snell's law

1.00sin66 = nsin38

<u>n = 1.48</u>

3 0
2 years ago
A 1kg dictionary is resting on a table that is 1.5m high. How much potential energy
melamori03 [73]

Answer:

Potential energy = 14.7 Joules.

Explanation:

Given the following data;

Mass, m = 1kg

Height, h = 1.5m

We know that acceleration due to gravity is equal to 9.8m/s²

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

P.E = mgh

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

P.E = mgh

Substituting into the equation, we have;

P.E = 1*9.8*1.5

P.E = 14.7 Joules.

6 0
2 years ago
A pilot is upside down at the top of an inverted loop of radius 3.20 x 103 m. At the top of the loop his normal force is only on
n200080 [17]

Answer:

6858.5712 m/s

Explanation:

Given that:

Radius, r

R = 3.20 * 10^3.

Normal force = 0.5 * normal weight

Normal force = Fn ; Normal weight = Fg

Fn = 0.5Fg

Recall:

mv² / R = Fn + Fg

Fn = 0.5Fg

mv² / R = 0.5Fg + Fg

mv² /R = 1.5Fg

mv² = 1.5Fg * R

F = mg

mv² = 1.5* mg * R

v² = 1.5gR

v = sqrt(1.5gR)

V = sqrt(1.5 * 9.8 * 3.2 * 10^3)

V = sqrt(47.04^3)

V = 6858.5712 m/s

6 0
2 years ago
What happens to a mirror when a ray is directed at it
mixas84 [53]

Nothing happens to the mirror. 

However, if the ray is within some suitable range of
wavelengths, the ray is reflected from the mirror's surface.

3 0
2 years ago
PLEASE HELPPP ASAP
vodomira [7]

Answer:

F = 12.5N

Explanation:

Force (F) = Mass (m) x Acceleration (a)

F = ma

F = (2.5kg) x (5m/s^2)

F = 12.5N

6 0
3 years ago
Other questions:
  • The number of protons and neutrons in an atom is that atom’s _____________ number.
    7·2 answers
  • If the position of a body is 3 m, 6 m, 9 m, 12 m at instants 2 s, 4 s, 6 s
    6·2 answers
  • The theory that the Earth's crust and part of the upper mantle are broken into sections that move on a fluid layer of the mantle
    14·1 answer
  • A wire of length L and cross-sectional area A has resistance R.
    13·1 answer
  • What is the sequence of events for the evolution of the atmosphere in the correct order
    14·1 answer
  • What is nuclear energy
    5·1 answer
  • PLeAsE hElp <br> What is the kinetic energy of 14 Kg traveling at a velocity of 3m/s east
    13·1 answer
  • What is the average income of an osteologist? (Anatomy)
    6·1 answer
  • A pendulum consists of a weight tied by a string that is attached to the ceiling. The diagram models the motion of the pendulum
    9·1 answer
  • In urgent need of help, science is my worse subject!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!