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
statuscvo [17]
3 years ago
14

Calculating Mass from Potential Energy A skier with a potential energy of 137,200 J waits on top of a ski jump that is 200 m hig

h. What is the mass of the skier? 20 kg 70 kg
Physics
2 answers:
IrinaVladis [17]3 years ago
6 0
Given:\\E_p=137200J\\g=9,8 \frac{m}{s^2} \\h=200m\\\\Find:\\m=?\\\\Solution:\\\\E_p=mgh\;\;\;/:gh\\\\m= \frac{E_p}{gh} \\\\m= \frac{137200J}{9,8 \frac{m}{s^2}\cdot 200m} =70kg
IrinaK [193]3 years ago
6 0

Answer:70k

Explanation:

You might be interested in
A(n) ________ is a specialized bursa that wraps around a tendon to reduce friction.
Kisachek [45]

Tendon Sheath - is a specialized bursa that wraps around a tendon to reduce friction.

<h3>What is Tendon Sheath ?</h3>

Tendon Sheath is a thin layer of tissue, surrounds each tendon in our body. The tendon sheath can also be called synovial lining or fibrous sheath. Tendon sheaths help to protect tendons from abrasive damage as they move.

Connection between Bursa and Tendon Sheath : Bursae are small fluid-filled sacs that can lie under a tendon, cushioning the tendon and protecting it from the injury. Bursae also provides an extra cushioning to adjacent structures that otherwise might rub against each other, which will cause wear and tear ( example, between a bone and a ligament ) .

So, lastly we can say that Tendon Sheath is the specialized bursa that wraps around a tendon to reduce friction.

To know more about Tendon Sheath please click here : brainly.com/question/17087116

#SPJ4

8 0
1 year ago
1. What is the acceleration of a car that goes from 20 Km/hr to 100 km/hr in 8 seconds?
san4es73 [151]

Answer:

10 :)

You have to divide the difference of speed and divide it by the time. So 100-20 would be 80, and if you divide that by 8 it would be 10.

Hope this helps.

7 0
3 years ago
Read 2 more answers
A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even withou
EastWind [94]

Answer:

As atoms in the spoon vibrates about their equilibrium positions and transfer energy form one end to other end. This process is called conduction.

4 0
3 years ago
Two separate disks are connected by a belt traveling at 5m/s. Disk 1 has a mass of 10kg and radius of 35cm. Disk 2 has a mass of
pantera1 [17]

Explanation:

Given that,

Linear speed of both disks is 5 m/s

Mass of disk 1 is 10 kg

Radius of disk 1 is 35 cm or 0.35 m

Mass of disk 2 is 3 kg

Radius of disk 2 is 7 cm or 0.07 m

(a) The angular velocity of disk 1 is :

v=r_1\omega_1\\\\\omega_1=\dfrac{v}{r_1}\\\\\omega_1=\dfrac{5}{0.35}\\\\\omega_1=14.28\ rad/s

(b) The angular velocity of disk 2 is :

v=r_2\omega_2\\\\\omega_2=\dfrac{v}{r_2}\\\\\omega_2=\dfrac{5}{0.07}\\\\\omega_2=71.42\ rad/s

(c) The moment of inertia for the two disk system is given by :

I=I_1+I_2\\\\I=\dfrac{1}{2}m_1r_1^2+\dfrac{1}{2}m_2r_2^2\\\\I=\dfrac{1}{2}(m_1r_1^2+m_2r_2^2)\\\\I=\dfrac{1}{2}\times (10\times (0.35)^2+3\times (0.07)^2)\\\\I=0.619\ kg-m^2

Hence, this is the required solution.

6 0
3 years ago
HEY CAN ANYONE ANSWER DIS RQ PLS!!!!
eduard

Answer:

scale and balance

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • The double inclined plane supports two blocks A and B, each having a weight of 10 lb. If the coefficient of kinetic friction bet
    8·1 answer
  • In a car how does an air bag minimize the force acting on a person during a collision
    6·2 answers
  • What does it mean when it says a scientific question must be supportable
    11·1 answer
  • Your neighbor Paul has rented a truck with a loading ramp. The ramp is tilted upward at 25°, and Paul is pulling a large crate u
    14·1 answer
  • A common physics demonstration is to drop a small magnet down a long, vertical aluminum pipe. Describe the motion of the magnet
    8·2 answers
  • which describes the attraction or repulsion caused by magnets? a. magnetic domain b. magnetic force c. magnetic field
    9·1 answer
  • Give an example in which velocity is zero yet acceleration is not.
    11·2 answers
  • 14. Three identical light bulbs are connected in series, then are disconnected and arranged in parallel. For each of the scenari
    5·1 answer
  • An object of mass 100kg is moving with a velocity of 5m/s. Calculate the kinetic energy of that object
    13·2 answers
  • Khái niệm lực điện,đặc điểm về tương tác điện của lực điện
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!