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
tresset_1 [31]
4 years ago
13

A group of physics students hypothesize that for an experiment they are performing, the speed of an object sliding down an incli

ned plane will be given by the expression v=2gd(sin(θ)−μkcos(θ))−−−−−−−−−−−−−−−−−−√. For their experiment, d=0.725meter, θ=45.0∘, μk=0.120, and g=9.80meter/second2. Use your calculator to obtain the value that their hypothesis predicts for v.
Physics
2 answers:
goblinko [34]4 years ago
6 0

Answer:

v = 2.974

Explanation:

Perhaps the formula should be

v = √(2*g*d (sin(θ) - uk*cos(θ) )                    This is a bit easier to read.

v = √(2* 9.80*0.725(0.707 - 0.12*0.707) )   Substitute values. Find 2*g*d

v = √14.21 * (0.707 - 0.0849)                        Figure out Sin(θ) - uk cos(θ)  

v = √14.21 * (0.6222)

v = √8.8422                                                  Take the square root of the value

v = 2.974

Tju [1.3M]4 years ago
6 0

Answer:

v = 2.97 m/s

Explanation:

As we know that the velocity expression for the given experiment is

v = \sqrt{2gd(sin\theta - \mu_kcos\theta)}

now we know that

d = 0.725 m

\theta = 45 ^o

\mu_k = 0.120

g = 9.80

now we have

v = \sqrt{2(9.80)(0.725)(sin45 - 0.120cos45)}

v = 2.97 m/s

You might be interested in
A bird can fly 25 km/h. How long does it take to fly 15 km?
Amanda [17]
25 km/h means that 15 kilometers will be 15/25ths of an hour. Therefore, 3/5 of an hour is 36 minutes, so it would take 36 minutes to fly that distance.
5 0
3 years ago
An earthquake is the shaking and trembling that results from the movement of rock beneath Earth's surface. Earthquakes most comm
Vladimir [108]

Answer:

See Explanation

Explanation:

Solution:-

Earthquakes happen when rock below the Earth's surface moves abruptly. Usually, the rock is moving along large cracks in Earth's crust called faults. Most earthquakes happen at or near the boundaries between Earth's tectonic plates because that's where there is usually a large concentration of faults. Some faults crack through the Earth because of the stress and strain of the moving plates. Other, large faults are the boundary between plates, such as the San Andreas Fault on the North American west coast.

Since earthquakes happen along faults and most faults are near plate boundaries, the yellow dots in the animation are found mostly at the boundaries between Earth's tectonic plates.

A subduction zone is the biggest crash scene on Earth. These boundaries mark the collision between two of the planet's tectonic plates. The plates are pieces of crust that slowly move across the planet's surface over millions of years.

Where two tectonic plates meet at a subduction zone, one bends and slides underneath the other, curving down into the mantle. (The mantle is the hotter layer under the crust.)  

Tectonic plates can transport both continental crust and oceanic crust, or they may be made of only one kind of crust. Oceanic crust is denser than continental crust. At a subduction zone, the oceanic crust usually sinks into the mantle beneath lighter continental crust. (Sometimes, oceanic crust may grow so old and that dense that it collapses and spontaneously forms a subduction zone, scientists think.)

7 0
3 years ago
Classify each of the following hydro carbons as alkane,alkene or alkyne
timofeeve [1]

Answer:

a.)alkene

b.)alkane

d.)alkana

about c..I think there is something wrong with the question

5 0
3 years ago
13) Fred is travelling 3.4 m/s and decelerates at a rate of 0.83 m/s until he comes to a stop
Finger [1]

Answer:

<h2>Tt will take 4.04 seconds</h2>

Explanation:

In this problem/exercise, we are going to apply the newtons first equation of motion to solve for the time taken

Given that

final velocity= 3.4m/s

initia velocity u= 0m/s

deceleration= 0.84 m/s^2

time t= ?

applying

v=u+at

Substituting our given data into the expression above we have

3.4=0+0.84t

3.4=0.84t

divide both sides by 0.84 we have

3.4/0.84= t

t= 4.04 seconds

3 0
3 years ago
To a stationary, a bus moves south with a speed of 15 m/s. a man inside walks toward the front of the bus with a speed of 0.2 m/
marta [7]
It is 15.2 m/s South.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Even one drink and make you an unsafe driver
    13·2 answers
  • Explain why intensity levels an important factor indoor workouts
    15·1 answer
  • Describe what happens to atom size as you go from left to right on the periodic table.
    6·1 answer
  • Describe how planets developed.<br><br><br> DESCRIBE, DONT STATE.
    9·2 answers
  • Which is the BEST definition of refraction? A) Light or sound waves change direction. B) Light or sound waves bounce off a mediu
    5·2 answers
  • An electric Kettle is rated at 25 W. Calculate the quantity of heat generated in 2s
    12·1 answer
  • Tell me something stupidbthe stupidest one gets brainliest​
    11·1 answer
  • A sloth moves 3 m to the right and then climbs 4 m up a tree.
    15·1 answer
  • Newton would agree that all objects on Earth exert a
    14·1 answer
  • Power of an electric motor is 1 h.p. what does it mean ?​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!