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
Kazeer [188]
3 years ago
7

what is the kinetic energy of an object that has mass of 30 kilograms and move with a velocity of 20 m/s

Physics
1 answer:
kotegsom [21]3 years ago
7 0
Kinetic Energy = 1/2 * m * v² 1/2 * 30 * 20² 1/2 * 30 * 400 12000/2 6000 J.
You might be interested in
Select the correct answer.
Aloiza [94]

Answer:

B

Explanation:

B

7 0
3 years ago
Suppose that the half-life of an element is 1000 years. How many half-lives will it take before one-eighth of the original sampl
34kurt

Answer:

3

Explanation:

The half-life of a radioactive isotope is the time it takes for the mass of the sample to halve.

This can be rewritten as follows:

m(t) = m_0 (\frac{1}{2})^n

where

m(t) is the mass of the sample at time t

m0 is the original mass of the sample

n is the number of half-lives that passed

We see that if we take n=3, the amount of original sample left is

m(t) = m_0 (\frac{1}{2})^3 = m_0 (\frac{1}{8})

So 3 (3 half-lives) is the correct answer.

3 0
3 years ago
Read 2 more answers
Which process do single-celled organisms go through to reproduce asexually?
andrezito [222]
The answer is A-Mitosis
7 0
3 years ago
Is 40,000 °C hotter or colder than 3,600 °C????
Amiraneli [1.4K]
Yes because if 0*c equals 32*F than the higher the number the hotter it is
4 0
3 years ago
Read 2 more answers
Weight is used most often for measuring____________________ whereas volume is used most often for measuring_____________________
Alex777 [14]

Answer:

Weight is used most often for measuring solid whereas volume is used most often for measuring liquid.

Explanation:

Weight is used most often for measuring solid, because solids have definite shape.  Weight is usually expressed in Newton (N) because it is a function of mass and gravity. ( weight = mass x gravity).

Whereas  volume is used most often for measuring liquid, usually expressed in cubic meter (m³) because liquids have no definite shape, rather they occupy the volume of their container.

6 0
2 years ago
Other questions:
  • Which statement best describe nucleic acids
    12·2 answers
  • A 69 kg driver gets into an empty taptap to start the day's work. The springs compress 2×10−2 m . What is the effective spring c
    10·1 answer
  • A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical accelera
    5·2 answers
  • If a car goes at a speed of 80 kph in 10 seconds, what is the distance
    7·1 answer
  • A spherical shell of mass M and radius R is completely filled with a frictionless fluid, also of mass M. It is released from res
    8·1 answer
  • If the body's temperature is above 105 °F for a prolonged period, heat stroke
    7·1 answer
  • An object undergoing simple harmonic motion completes one cycle of motion in 1.7 seconds. Determine the angular frequency (rad/s
    10·1 answer
  • A 10 gram ball is rolling at 3 m/s. What is the energy the ball has?
    11·1 answer
  • A student in your class whom you kind-of like asks you come to watch a meteor shower. What exactly are you being invited to? a.
    8·1 answer
  • What two vertical forces act on a falling leaf?(1 point)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!