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
Irina18 [472]
3 years ago
13

Joe needs to push his car 20 feet up a hill. If

Mathematics
1 answer:
Sever21 [200]3 years ago
5 0

Answer:

What if you have to push a heavy object up a ramp? Say, for example, you have to move a refrigerator. You want to go camping, and because you expect to catch plenty of fish, you decide to take your 100-kilogram refrigerator with you. The only catch is getting the refrigerator into your vehicle (see the figure). The refrigerator has to go up a 30-degree ramp that happens to have a static coefficient of friction with the refrigerator of 0.20 and a kinetic coefficient of friction of 0.15. The good news is that you have two friends to help you move the fridge. The bad news is that you can supply only 350 newtons of force each, so your friends panic.

The minimum force needed to push that refrigerator up the ramp has a magnitude Fpush, and it has to counter the component of the weight of the refrigerator acting along the ramp and the force due to friction.

The first step in this problem is to resolve the weight of the refrigerator into components parallel and perpendicular to the ramp. Take a look at the figure, which shows the refrigerator and the forces acting on it. The component of the weight of the refrigerator along the ramp is

Step-by-step explanation:

please rate thank and follow

You might be interested in
4. CSC X COS X - 2 cos x = 0
Alisiya [41]

Answer:

infinitely many answers, any odd integer n times π/2

ex. π/2, 3π/2, 5π/2

Step-by-step explanation:

we know that cos (π/2) or cos(3π/2) is 0

if one factor is 0, the product is zero, so we will not care about csc(x).

x is any odd integer n times π/2

3 0
3 years ago
Confused on number 5 <br> can someone plz help
Bingel [31]
Can you give me the problem
7 0
3 years ago
A company is producing two types of ski goggles. Thirty percent of the production is of type A, and the rest is of type B. Five
exis [7]

Answer:

\dfrac{14}{29}

Step-by-step explanation:

Let <em>P(A) </em>be the probability that goggle of type A is manufactured

<em>P(B) </em>be the probability that goggle of type B is manufactured

<em>P(E)</em> be the probability that a goggle is returned within 10 days of its purchase.

According to the question,

<em>P(A)</em> = 30%

<em>P(B)</em> = 70%

<em>P(E/A)</em> is the probability that a goggle is returned within 10 days of its purchase given that it was of type A.

P(E/B) is the probability that a goggle is returned within 10 days of its purchase given that it was of type B.

P(A \cap E) will be the probability that a goggle is of type A and is returned within 10 days of its purchase.

P(B \cap E) will be the probability that a goggle is of type B and is returned within 10 days of its purchase.

P(E \cap A) = P(A) \times P(E/A)

P(E \cap A) = \dfrac{30}{100} \times \dfrac{5}{100}\\\Rightarrow P(E \cap A) = 1.5 \%

P(E \cap B) = P(B) \times P(E/B)

P(E \cap B) = \dfrac{70}{100} \times \dfrac{2}{100}\\\Rightarrow P(E \cap B) = 1.4 \%

P(E) = 1.5 \% + 1.4 \% \\P(E) = 2.9\%

If a goggle is returned within 10 days of its purchase, probability that it was of type B:

P(B/E) = \dfrac{P(E \cap B)}{P(E)}

\Rightarrow \dfrac{1.4 \%}{2.9\%}\\\Rightarrow \dfrac{14}{29}

So, the required probability is \dfrac{14}{29}.

7 0
3 years ago
Explain what is meant by domain and range.
prohojiy [21]
The domain are the required input for a given function, while the range are the output or result from the function.
5 0
3 years ago
Read 2 more answers
What is the answer for this question?
Savatey [412]

Answer:

A

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • PLZ HELP ME Plz THE BEST THE BRAINLIEST AND GENIUS IN MY EYE SO PLZZZZ
    14·1 answer
  • What is the measure of A ? ​
    11·2 answers
  • The robots are powered on coffee alone. They use 2 bags of coffee each day. How long will 1/4 of a bag of coffee last them
    8·2 answers
  • What is the area of the two-dimensional cross section that is parallel to face ABC ?
    8·1 answer
  • Bill bought a new cellular phone. His monthly bill will be $32.99 each month which includes 100 minutes of use. Additional minut
    12·2 answers
  • What is the solution to 5/8 ÷ 3/4 ?
    11·1 answer
  • What is f(-3) for the function f(x) = -5x - 7? ​
    15·1 answer
  • Can someone please help?
    6·2 answers
  • HELP ME PLEASE :( Will mark as brainlist, only correct answers
    12·1 answer
  • What is the sum of 3.6 + 2.95
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!