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
Serga [27]
3 years ago
13

Luke stands on the edge of a roof throws a ball downward. It strikes the ground with 100J of kinetic energy. Luke now throws ano

ther identical ball upward with the same initial speed, and this too falls to the ground. Neglecting air resistance, the second ball hits the ground with kinetic energy of____J
A) Less than 100
B) 100
C) 200
D) More than 200
Physics
1 answer:
attashe74 [19]3 years ago
3 0
A. Less than 100 this the answer
You might be interested in
The electrical force on a 2-c charge is 60 n. the electric field where the charge is located is
Kazeer [188]
The electrical force acting on a charge q immersed in an electric field is equal to
F=qE
where
q is the charge
E is the strength of the electric field

In our problem, the charge is q=2 C, and the force experienced by it is
F=60 N
so we can re-arrange the previous formula to find the intensity of the electric field at the point where the charge is located:
E= \frac{F}{q}= \frac{60 N}{2 C}=30 N/C
5 0
3 years ago
What is the SI unit used to measure the temperature of a substance?
ss7ja [257]

Answer:

Kelvin

Explanation:

Kelvin is the universal and scientific unit for temperature as Celsius and Fahrenheit temperatures we use in everyday situations

3 0
3 years ago
Where does bacteria come from
brilliants [131]

Answer:

Fugis

Explanation:

dsd

4 0
3 years ago
Read 2 more answers
A piano mover raises a 1000-n piano at a constant speed using a very light rope in a frictionless pulley system, as shown in the
Rina8888 [55]

Here As we can see the figure that the end of the rope is pulled by some force F

Now as we can see that Piano is connected by a pulley which is passing over the pulley so effectively net force on the piano upwards will be 2F as it is connected by 2 ropes by the pulley

Now for constant velocity of the piano we will say

2F - mg = ma

since velocity is constant so acceleration must be ZERO

so here we have

2F - mg = 0

as we know here that

mg = 1000 N

so we will have

2F - 1000 = 0

F = 500 N

so here force must be 500 N

5 0
3 years ago
Read 2 more answers
7. How many 1.00 µF capacitors must be connected in parallel to store a charge of 1.00 C with a potential of 110 V across the ca
Misha Larkins [42]

Answer:

q = C V    charge on 1 capacitor

q = 1 * 10E-6 * 110 = 1.1 *  10E-4  C per capacitor

N = Q / q = 1 / 1.1 * 10E-4  = 9091 capacitors

8 0
3 years ago
Other questions:
  • A racecar experiences a centripetal acceleration of 36.0 m/s2 as it travels at a constant speed of 27.0 m/s along a circular arc
    8·2 answers
  • Help Please
    9·2 answers
  • Which sentence provides evidence that heat travels from Earth’s mantle up to its crust?
    15·1 answer
  • Can you think of some places where we use electric buzzers
    14·1 answer
  • A car with a mass of 1140 kg is traveling in a mountainous area with a constant speed of 71.8 km/h. The road is horizontal and f
    10·1 answer
  • ____ and ____ both discovered electromagnetic induction. This is that electric current could be produced in a wire by moving a m
    10·1 answer
  • What does the slope of the curve on a distance vs time graph represent?
    6·1 answer
  • 3. An element that is malleable is
    10·2 answers
  • PLZ HELP ME WITH THIS QUESTION! NO LINKS!!<br>will give 5 stars and brainliest ​
    7·2 answers
  • A football player kicks a ball with the force of 50N. Find the impulse on the ball if his foot stays in contact with the footbal
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!