answer.
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
podryga [215]
2 years ago
7

A student with a mass of 66.0 kg climbs a staircase in 44.0 s. If the distance between the base and the top of the staircase is

14.0 m, how much power will the student deliver by climbing the stairs
Physics
1 answer:
Tom [10]2 years ago
4 0

<em>power = 205.8 \: watt \\ solution \\ mass = 66 \: kg \\ time = 44 \: sec \\ distance = 14 \\ now \\ power =  \frac{w}{t}  \\  \:  \:  \:  \:  \:  \:  \:  \:  =  \frac{f \times d}{t}  \\  \:  \:  \:  \:  \:  =  \frac{m \times g \times d}{t}  \\  \:  \:  \:  \:  \:  \:  =  \frac{66 \times 9.8 \times 14}{44}  \\  \:  \:  \:  \:  =  \frac{9055.2}{44}  \\  \:  \:  \:  \:  \:  = 205.8 \: watt \\ hope \: it \: helps</em>

You might be interested in
The data table below shows the distribution of the energies of a pendulum 0.60 s into its motion. What is the missing value?
ohaa [14]
The total energy (also called mechanical energy) is the sum of the kinetic energy and potential energy:
TE = KE + PE
For this pendulum, we see that at t=0.60 s the total energy is TE=0.918 J while the potential energy is 0.054 J, so the kinetic energy (the missing value in the table) is
KE=TE-PE=0.918 J - 0.054 J =0.864 J
4 0
1 year ago
An artificial satellite in a low orbit circles the earth every 98 minutes. what is its angular speed in rad/s?
postnew [5]
To finish one orbit it will take 98 x 60 seconds. So; <span>(2 x pi)/(98 x 60) = 1.07 x 10^-3 rad/sec. </span><span>
</span>
8 0
2 years ago
A 6000 kg lorry is reversing into a parking space at a speed of 0.5 m/s but collides with a car. The crumple zone of the car sto
zysi [14]

Answer:

3000 kg.m/s

Explanation:

Momentum, p is a product of mass and velocity hence

p=mv where m is mass and v is velocity.

Change in momentum is given by m(v_f-v_i) where subscripts f and i represent final and initial respectively. Since the lorry finally comes to rest then the final velocity is zero. Substituting the given figures then

Change in momentum= 6000(0-0.5)=-3000 kg.m/s

7 0
2 years ago
the flow energy of 124 L/min of a fluid passing a boundary to a system is 108.5 kJ/min. Determine the pressure at this point
Andreyy89

Answer:

The pressure at this point is 0.875 mPa

Explanation:

Given that,

Flow energy = 124 L/min

Boundary to system P= 108.5 kJ/min

P=1.81\ kW

We need to calculate the pressure at this point

Using formula of pressure

P=F\times v

P=A_{1}P_{1}\times v_{1}

Here, A_{1}v_{1}=Q_{1}

Where, v = velocity

Put the value into the formula

1.81 =P_{1}\times0.124\times\dfrac{1}{60}

P_{1}=\dfrac{1.81\times60}{0.124}

P_{1}=875.80\ kPa

P_{1}=0.875\ mPa

Hence, The pressure at this point is 0.875 mPa

5 0
1 year ago
two forces P and Q pass through a point A which is 4 ft to the right of and 3 ft above a moment center O. force P is 200 lb dire
valentinak56 [21]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

The moment of the resultant of these two forces with respect to O 376 lb-ft CCW which is <span>about moment center point O.</span>
6 0
1 year ago
Other questions:
  • In the swing carousel amusement park ride, riders sit in chairs that are attached by a chain to a large rotating drum as shown i
    7·1 answer
  • The index of refraction for silicate flint glass is 1.66 for violet light that has a wavelength in air equal to 400 nm and 1.61
    15·1 answer
  • Determine the ratio of the flow rate through capillary tubes A and B (that is, QA/QB). The length of A is twice that of B, and t
    8·1 answer
  • A mountain 10.0 km from a person exerts a gravitational force on him equal to 2.00% of his weight. (a) Calculate the mass of the
    15·1 answer
  • Snowboarder Jump—Energy and Momentum
    9·1 answer
  • Part A At t tt = 2.0 s s , what is the particle's position? Express your answer to two significant figures and include the appro
    15·1 answer
  • 1. Describe the methods by which an electric potential develops in primary cells and dry cells.
    13·1 answer
  • In a study, the data you collect is Habits on a Always/Sometimes/Never scale.What is the level of measurement?
    15·1 answer
  • Because of your knowledge of physics, you have been hired as a consultant for a new James Bond movie, "Oldfinger". In one scene,
    13·1 answer
  • You skip north for 12 minutes to your best friend's house that is 1.5 kilometers away. What is your average velocity?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!