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
Ainat [17]
3 years ago
9

A boulder with a weight of 780 N is resting at the edge of a cliff that rises 123 m above the ground. What is the gravitational

potential energy of the boulder?
Physics
1 answer:
-Dominant- [34]3 years ago
3 0
Potential energy U = mgh

Given h = 123 m,
mg = F = 780 N

Then
U = (123)(780)
= 95940
= 9.59 x 10^4
You might be interested in
A loop circuit has a resistance of R1 and a current of 1.8 A. The current is reduced to 1.6 A when an additional 3.8 Ω resistor
Allisa [31]

Answer:

Value of R_1=30.4ohm

Explanation:

We have given

In first case resistance is R_1 and current is 1.8 A

Let the potential difference is v

So 1.8=\frac{v}{R_1}----eqn 1

In second case resistance is R_1+3.8 and current is 1.6 A and potential difference will be as it is a series connection

So 1.6=\frac{v}{R+3.8}----eqn 2

From eqn 1 and eqn 2

1.8R_1=1.6R_1+6.08

R_1=30.4ohm

6 0
3 years ago
Read 2 more answers
How many times a minute does your heart usually beat?
ycow [4]

Answer:

60-100

Explanation:

A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness.

HOPE THIS HELPS!!! HAVE A GREAT DAY!!!

7 0
3 years ago
Read 2 more answers
Lithium
tigry1 [53]

Answer:d

Explanation:

6 0
3 years ago
Two charged concentric spheres have radii of 0.008 m and 0.018 m. The charge on the inner sphere is 3.62 10-8 C and that on the
Alekssandra [29.7K]

Answer:

The electric field is  E  =  2.2625 *10^{6} \  N/C

Explanation:

From the question we are told that

       The radius of the inner sphere  is  r_1 =  0.008\ m

        The radius of the outer sphere is r _2  =  0.018 \ m

       The charge on the inner sphere is  q_1 =  3.62 *10^{-8} \ C

        The charge on the outer sphere is  q_2 = 1.62 *10^{-8} \ C

        The position from the  origin is d =  0.012 \ m

Generally the electric field is mathematically represented as

        E = \frac{k (q_1 )}{ r^2}

The reason for using  q_1 for the calculation is due to the fact that the position considered is greater than the r_1 but less than r_2

 Here k is the Coulomb constant with value   k = 9*10^{9} \ kg\cdot m^3\cdot s^{-4} \cdot A{-2}

    So  

         E =  \frac{9*10^9 (3.62  *10^{-8}}{0.012^2}

         E  =  2.2625 *10^{6} \  N/C

   

6 0
3 years ago
Put a ball on the floor what forces are acting on it
In-s [12.5K]

Answer: Gravity

Explanation: Gravity is pulling down on the ball, making it stay on the floor

8 0
4 years ago
Other questions:
  • In nuclear ___________, two light nuclei combine to form a heavier one.
    8·2 answers
  • Explain how the technology of doing math and adding numbers has changed over time this is science
    6·1 answer
  • To measure the height of a building without a ruler or tape measure, an engineer drops a rock off the top of the building and fi
    8·1 answer
  • A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that a
    5·1 answer
  • Water is drawn from a well in a bucket tied to the end of a rope whose other end wraps around a solid cylinder of mass 50 kg and
    13·1 answer
  • What would happen to an electric circuit if the current source was removed? Explain.
    10·2 answers
  • Which of the following correctly describes the relationship between speed and velocity?
    9·1 answer
  • Mrs. Howel, the principal, can expel a student for misconduct. In terms of social pressure, Mrs. Howel is capable of eliciting
    8·1 answer
  • A 1kg rock is held in place by against the inside wall of the rotating drum. The radius of the drum is 0.2 meters and the period
    9·1 answer
  • Please help 30 points. write definition and examples of each. (give atleast 2 examples).
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!