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
weqwewe [10]
2 years ago
7

An object has a gravitational

Physics
1 answer:
kirill [66]2 years ago
4 0

Answer:

potential energy = (mass × height × acceleration due to gravity.)

750 = mass × 3 × 10

hence, mass = 750/30 = 25 kg.

You might be interested in
A circular loop of wire 78 mm in radius carries a current of 114 A. Find the (a) magnetic field strength and (b) energy density
Finger [1]

Explanation:

It is given that,

Radius of loop, r = 78 mm = 0.078 m

Current, I = 114 A

(a) Magnetic field strength of the circular loop is given by :

B=\dfrac{\mu_oI}{2R}

B=\dfrac{4\pi \times 10^{-7}\times 114}{2\times 0.078}

B = 0.000918 T

or

B=9.18\times 10^{-4}\ T

(b) Energy density at the center of the loop is given by :

U=\dfrac{B^2}{2\mu_o}

U=\dfrac{(0.000918)^2}{2\times 4\pi \times 10^{-7}}

U=0.335\ J/m^3

Hence, this is the required solution.

7 0
3 years ago
At what time were the racers at the same position?<br> O 15<br> O 3s<br> O 5s<br> 0 4s
Jlenok [28]
The Answer is:

O 3s

Hope you got it right.
5 0
3 years ago
Read 2 more answers
A circuit has a 10 Ω resistor connected to a 1.5 V dry cell. What is the current that can flow in the circuit?
ludmilkaskok [199]

Here is the highly detailed, arcane, complex, technical form of Ohm's Law that is needed in order to answer this question  ===>  I = V / R  .

Current = (voltage) / (resistance)

Current = (1.5 V) / (10 Ω)

<em>Current = 0.15 Ampere</em>

8 0
3 years ago
Give brainliist!!!!!!!!!!!Which statement is correct about Kepler's laws of planetary motion? It is made by a government. It is
Brilliant_brown [7]

Answer:

Explanation:

It is a scientific law because it is based on observations

4 0
4 years ago
Read 2 more answers
A block is given a very brief push up a 20.0° frictionless incline to give it an initial speed of 12.0 m/s. (a) how far along th
shtirl [24]
The incline is frictionless, this means we can use the conservation of energy: the initial kinetic energy of the block
K= \frac{1}{2}mv^2
is converted into gravitational potential energy
U=mgh
where h is the height reached by the block as it stops. By equalizing the two formulas, we get
\frac{1}{2} mv^2=mgh
h= \frac{v^2}{2g}= \frac{(12.0 m/s)^2}{2(9.81 m/s^2)} =7.3 m

However, this is the maximum height reached by the block. The distance along the surface of the plane is given by:
d= \frac{h}{\sin 20^{\circ}}= \frac{7.3 m}{\sin 20^{\circ}}=21.3 m
4 0
4 years ago
Other questions:
  • A block with mass m = 0.450 kg is attached to one end of an ideal spring and moves on a horizontal frictionless surface. The oth
    14·2 answers
  • What will the speed of a sound wave change if the Temperature of the medium rises
    8·1 answer
  • A 1-kilogram turtle crawls in a straight line at a speed of 0.01 m/sec what is the turtles momentum
    15·1 answer
  • A boat travels upstream for 12 miles in 3 hours and returns in 2 hours traveling downstream in a river. What is the rate of the
    9·1 answer
  • The surface tension of water is 7.28 ✕ 10−2 J/m2 at 20°C. Predict whether the surface tension of octane would be higher or lower
    14·1 answer
  • How is the lifetime of a star related to its mass?
    8·1 answer
  • When objects are charged by _______, they do not need to touch each other.
    11·1 answer
  • Please help, thank you !
    5·1 answer
  • The 6th harmonic of a pipe is open at both ends has a frequency of 732 Hz, on a day when the temperature is 10 degrees Celsius.
    13·1 answer
  • Ill give 50 points aNd brainiest to who ever gives the best answer, its due in 30 minutes , please help
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!