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
konstantin123 [22]
3 years ago
6

Find the kinetic energy of a ball of mass 200 grams moving at a speed of 20 m/s​

Physics
2 answers:
Ronch [10]3 years ago
7 0
Yes the explanation about shows that it’s 40j
Aleks04 [339]3 years ago
6 0

Answer:

40 J

Explanation:

KE = \frac{1}{2} mv^{2} \\KE = \frac{1}{2} (0.200 kg)(20 m/s)^{2} \\KE = 40 J

You might be interested in
As Earth travels in its ____, different constellations are visible at different times of the year.
Lesechka [4]
The answer would be orbit.
4 0
3 years ago
Read 2 more answers
Can someone help me pls
inna [77]

Answer:

C

Explanation:

8 0
3 years ago
A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.0 cm wide and 5.00 m long. Between the sheets is a mica
Evgen [1.6K]

This question is incomplete, the complete question is;

A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.0 cm wide and 5.00 m long. Between the sheets is a mica strip of the same width and length that is 0.0225 mm thick. What is the maximum charge?

(The dielectric constant of mica is 5.4, and its dielectric strength is 1.00×10⁸ V/m)

Answer: the maximum charge q is 716.85 μF

Explanation:

Given data;

with = 3.0 cm = 0.03

breathe = 5.0 m

Area = 0.03 × 5 = 0.15 m²

dielectric strength E = 1.00 × 10⁸

∈₀ = 8.85 × 10⁻¹²

constant K = 5.4

maximum charge = ?

the capacitor C = KA∈₀ / d

q = cv so c = q/v

now

q/v = KA∈₀ / d

q =  vKA∈₀/d = EKA∈₀

we substitute

q = (1.00 × 10⁸) × 5.4 × 0.15 ×  8.85 × 10⁻¹²    

q = 716.85 × 10⁻⁶ F

q = 716.85 μF

the maximum charge q is 716.85 μF

7 0
3 years ago
If two people are running at the same speed in the same direction. One person is one meter ahead of the other. The person in fro
Gre4nikov [31]

Answer:yes

Explanation:

5 0
3 years ago
Find the average force exerted by the bat on the ball if the two are in contact for 0.00129 s. Answer in units of N.
Semmy [17]

Answer:

Explanation:

Given

time of contact between bat and ball is t=0.00129 s

suppose u is the incoming velocity and v is the final velocity after collision

m=mass\ of\ ball

Impulse exerted is given by change in momentum of the particle.

Initial momentum P_i=m\times u

Final momentum P_f=m\times v

Change in momentum \Delta P=P_i-P_f

Impulse    J=F_{avg}\cdot t=\Delta P

J=F_{avg}\cdot t=m(u-v)

F_{avg}=\frac{m(v-u)}{t}

F_{avg}=775.2\times m(v-u)\ N                

5 0
4 years ago
Other questions:
  • 9. A child standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down, the child co
    12·1 answer
  • Which statement is not true?
    13·2 answers
  • Is this diagram important in exams?
    5·1 answer
  • A woman performs 2000 J of work in order to push a cart full of groceries 50 meters. How much force did she apply to the cart?
    13·1 answer
  • Macro shots of flowers will typically have a shallow depth of field. True or False?
    14·2 answers
  • Which of these actions would increase heat transfer between two objects?
    6·2 answers
  • PLEASE HELPPPPPP <333​
    13·2 answers
  • There are several ways to model a compound. One type of model is shown.
    13·2 answers
  • An object with a momentum of 1600 kg m/s slows down and its new momentum is 900 kg m/s. What is the magnitude of the impulse tha
    6·1 answer
  • An object is moving with a force 30N then hits a wall to a stop in 0.5s.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!