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
Harlamova29_29 [7]
2 years ago
15

an object of mass 2kg is released from a top of inclined plane 30° and height 6m. The coefficient of kinetic friction of the sur

face is 0.15. a , What is the work done against fraction when the reaches the bottom ? b , What is the kinetic energy of the object when it reaches the bottom ? c , What is the speed of the object when it reaches the the bottom ?​
Engineering
1 answer:
mel-nik [20]2 years ago
5 0

Explanation:

1) Work done = force x distance x cos(θ)

= 0.15 x 6 x cos(30)

= 0.779

2) Ek = ½mv²

v = acceleration due to gravity so 9.81

Ek = ½(2)(9.81)²

Ek = 96.2361

3) v = (√(2em)) / m

= (√(2(96.2361)(2)) / 2

= 9.81 so especially with no time given, I can only assume the acceleration due to gravity but take it with a pinch of salt.

You might be interested in
Determine the wattmeter reading when it is connected to resistor load.​
kicyunya [14]

Answer:

Each wattmeter measures a line-to-line voltage between two of the three power supply lines. In this configuration, the total power, watts is accurately measured by the algebraic sum of the two wattmeter values. Pt = P1 + P2. This holds true if the system is balanced or unbalanced.

3 0
3 years ago
What was the reason alloys were used instead of metals like copper, tin, or iron?
lidiya [134]

Alloys were stronger and more durable

8 0
2 years ago
a circular pile, 19 m long is driven into a homogeneous sand layer. The piles width is 0.5 m. The standard penetration resistanc
Elena L [17]

Answer:

Point force (Qp) = 704 kn/m²

Explanation:

Given:

length = 19 m

Width = 0.5 m

fs = 4

Vicinity of the pile = 25

Find:

Point force (Qp)

Computation:

Point force (Qp) = fs²(l+v)

Point force (Qp) = 4²(25+19)

Point force (Qp) = 16(44)

Point force (Qp) = 704 kn/m²

5 0
3 years ago
Give two advantages of a four-high rolling mill opposed to a two-high rolling mill for the same output diameter.
uysha [10]

Answer:

<u>Four- high rolling mill </u>                              <u>Two-high rolling mill</u>

1.Small roll radius.That is why required  1.High roll radius.That is  required low power.           .                    why required high power.

2.  Low roll separating force.                   2.High roll separating

                                                                        force

7 0
4 years ago
What is the function of filters in communication system ?​
mihalych1998 [28]

In signal processing, a filter is a device or process that removes some unwanted components or features from a signal. Filtering is a class of signal processing, the defining feature of filters being the complete or partial suppression of some aspect of the signal. Most often, this means removing some frequencies or frequency bands. However, filters do not exclusively act in the frequency domain; especially in the field of image processing many other targets for filtering exist.

Explanation:

8 0
3 years ago
Other questions:
  • 1.5 kg of liquid water initially at 12∘C is to be heated to 95∘C in a teapot equipped with an 800-W electric heating element ins
    9·1 answer
  • Air suspension in german cars
    13·1 answer
  • Derive the dimensions of specific heat that is defined as the amount of heat required to elevate the temperature of an object of
    6·1 answer
  • Why is understanding the risks and hazards associated with fires important?
    11·2 answers
  • Asolid rectangular rodhas a length of 90mm, made of steel material (E =207,000 MPa, Syield= 300 MPa), the cross section of the r
    14·1 answer
  • What are the two tools used to create an HTML code? Name one example of each tool.
    9·1 answer
  • Which of the following is not a function of the suspension system?_____
    6·1 answer
  • Accidents occur as a result of ____ and ____.
    7·1 answer
  • Describe the greatest power in design according to Aravena?
    6·1 answer
  • a) find the state-space representation of the system. b) is the system controllable? why? c) is the system observable? why
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!