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
andriy [413]
3 years ago
9

Someone please help me! And I will mark you as brainlist!!

Physics
1 answer:
Ronch [10]3 years ago
6 0

Answer:

1. G.P.E = 24 J

2. center of mass

Explanation:

Given the following data;

Mass = 2kg

Height, h = 1.2m

Acceleration due to gravity = 9.8 N/kg or m/s².

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

G.P.E = mgh

Where;

  • G.P.E represents potential energy measured in Joules.
  • m represents the mass of an object.
  • g represents acceleration due to gravity measured in meters per seconds square.
  • h represents the height measured in meters.

Substituting into the formula, we have;

G.P.E = 2*1.2*9.8

G.P.E = 23.52 to 2 S.F = 24 Joules.

Translation kinetic energy is defined as the energy of a system due to the motion of the system’s center of mass. The center of mass is typically where the mass of the object or particle is concentrated.

You might be interested in
The most common listening problem is
djverab [1.8K]
I think the correct answer is C
7 0
3 years ago
A jogger hears a car alarm and decides to investigate. While running toward the car, she hears an alarm frequency of 872.10 Hz.
Nata [24]

Answer:

v = 4.18 m/s

Explanation:

given,

frequency of the alarm = 872.10 Hz

after passing car frequency she hear = 851.10 Hz

Speed of sound = 343 m/s

speed of the jogger = ?

speed of the

v_f = \dfrac{872.10-851.10}{2}

v_f =10.5\ Hz

v_o = 872.1 - 10.5

V_0 = 861.6\ Hz

The speed of jogger

v = \dfrac{v_1 \times 343}{v_0}-343

v = \dfrac{872.1 \times 343}{861.6}-343

v = 4.18 m/s

5 0
3 years ago
An object with high momentum ______.
Pepsi [2]
The answer should be (b)
7 0
3 years ago
A wind-tunnel experimentis performed on a 1/25scale model of a supersonic aircraft. The prototype aircraft flies at 450 m/s in c
KengaRu [80]

Answer: V = 504m/a

F = 4N

Explanation: please find the attached file for the solution

4 0
3 years ago
The diagram shown represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the
natta225 [31]

Answer:

50 N

Explanation:

Efficiency of a machine can't be more than 1, so I assume you mean 40%.  (Remember, efficiency and mechanical advantage are not the same).

Efficiency is the ratio of work out of a system to the work in to the system.

e = Wout / Win

Work is force times distance, so:

e = (Fout × Dout) / (Fin × Din)

Rearranging:

Fin = (Fout × Dout) / (e × Din)

Fin = (Fout / e) × (Dout / Din)

Fin = (Fout / e) / (Din / Dout)

We know that e = 0.40, and Fout = 120 N.  Since there are 6 pulleys, we also know that Din/Dout = 6.

F = (120 N / 0.4) / 6

F = 50 N

5 0
3 years ago
Other questions:
  • The work done on a box moved 3 meters by a force of 6 newtons is  newton-meters.
    14·1 answer
  • A juggler throws a ball straight up into the air. The ball remains in the air for a time (t) before it lands back in the juggler
    6·1 answer
  • Comparing objects in a related group can reveal patterns among them. These patterns in turn can help us learn more about those o
    5·1 answer
  • A gnat takes off from one end of a pencil and flies around erratically for 41.641.6 s before landing on the other end of the sam
    12·1 answer
  • What is the equivalent resistance for a parallel circuit that has two resistors: 18.0 ohms and 23.5 ohms?
    7·1 answer
  • A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following c
    8·2 answers
  • say I have two rocks of different sizes but are taken from the same rock. Will their density be equalvilent
    13·1 answer
  • Part D
    8·1 answer
  • A snail can move approximately.3 meters per minute. How many<br> meters can a snail travel in 45min?
    8·1 answer
  • Write a rule for the sequence. 3, -3, -9, -15. A. Start with 3 and add -6 repeatedly B. Start with -6 and add 3 repeatedly C. St
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!