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
AysviL [449]
3 years ago
13

Two objects were lifted by a machine. one object had a mass of 2 kilograms and was lifted at the speed of 2 m/s. the other had a

mass of 4 kilograms and
was lifted at a rate of 3 m/s. which object had more potential energy when it was lifted to a distance of 10 meters
Physics
1 answer:
kvasek [131]3 years ago
5 0

Potential energy is proportional to the object's mass, and to the height
to which it's lifted.  If the heights are the same, then it depends only on
the mass, and the 4-kg object has more potential energy at that height. 
How long it took each one to arrive at that height is a totally irrelevant
consideration.


You might be interested in
Which element can form straight chains, branched chains, and rings
Mice21 [21]
Carbon atoms can form straight, and branched chains, and rings
6 0
3 years ago
Read 2 more answers
An electron moves at a speed of 1.0 x 104 m/s in a circular path of radius 2 cm inside a solenoid. The magnetic field of the sol
iogann1982 [59]

Answer:

(a) B = 2.85 × 10^{-6} Tesla

(b) I =  I = 0.285 A

Explanation:

a. The strength of magnetic field, B, in a solenoid is determined by;

r = \frac{mv}{qB}

⇒ B = \frac{mv}{qr}

Where: r is the radius, m is the mass of the electron, v is its velocity, q is the charge on the electron and B is the magnetic field

B = \frac{9.11*10^{-31*1.0*10^{4} } }{1.6*10^{-19}*0.02 }

  = \frac{9.11*10^{-27} }{3.2*10^{-21} }

B = 2.85 × 10^{-6} Tesla

b. Given that; N/L = 25 turns per centimetre, then the current, I, can be determined by;

B = μ I N/L

⇒    I = B ÷ μN/L

where B is the magnetic field,  μ is the permeability of free space = 4.0 ×10^{-7}Tm/A, N/L is the number of turns per length.

I = B ÷ μN/L

 = \frac{2.85*10^{-6} }{4*10^{-7} *25}

I = 0.285 A

5 0
3 years ago
You walk into a darkened room and turn on a flashlight. You see an image of the flashlight reflecting off a plane mirror in fron
user100 [1]

Answer:

4.2 is the answer

Explanation

The image formed in a plane mirror is an equal distance behind the mirror as the object in front of it.

Step 1: the equation to this problem would be: 8.4/2

Step 2: 8.4 ÷ 2 = 4.2

6 0
2 years ago
What is the instantaneous velocity v of the particle at t=10.0s?
algol [13]
The instantenous velocity is just the slope of the graph at a certain instant. Since the graph is a straight line, its instantenous velocity is uniform through out. v = dx / dt = (40 - 10) / (50 - 0) = 0.6 m/s.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
6 0
3 years ago
Read 2 more answers
A sound wave has a frequency of 247 hz and a wavelength of 1.4 m. what is the speed of the sound wave in air?
Pavel [41]
Speed = wavelength * Frequency 
s = 247 /s * 1.4 m
s = 345.8 m/s

In short, Your Answer would be 345.8 m/s

Hope this helps!
7 0
3 years ago
Other questions:
  • The attractive electrostatic force between the point charges 6.14×10−6 c and q has a magnitude of 0.845 n when the separation be
    11·1 answer
  • In electroplating, the object to be plated is which part of an electrolytic cell? cathode or anode
    8·2 answers
  • The small intestine _____.
    6·2 answers
  • Calculate the internal axial load at a point D if length L=7 ft. The part is subjected to loads P1=632 lbs, P2=888 lbs (applied
    11·1 answer
  • Match the given equation with the verbal description of the surface: A. Circular Cylinder B. Plane C. Cone D. Half plane E. Sphe
    8·1 answer
  • Which statement is the best example of pseudoscience?
    10·1 answer
  • With manual transmission, use your right foot for the brake and accelerator and left foot for the clutch true or false
    8·2 answers
  • HELP ME PLEASEEEEEEEEEEEEEE
    15·1 answer
  • His is the geologic process of breaking down rocks into smaller and smaller pieces. There are two main types: chemical and mecha
    9·2 answers
  • _____ is a area of darkness
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!