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
zlopas [31]
3 years ago
15

‏Calculate the kinetic energies of the following objects moving at the given speeds : ( a ) a 91 kg football linebacker running

at 8.9 m / s ; ( b ) a 4,9 g bullet at 807 m / s ; ( C ) Carrier Moritz , 91,400 metric tons at 23 knots . ( 1 metric ton - 1000 kg , 1 knot - 0.514 m / s )
Physics
1 answer:
damaskus [11]3 years ago
5 0

Answer:

Explanation:

KE = ½mv²

a) KE = ½(91)(8.9²) = 3,604.055 = 3.6 kJ

b) KE = ½(0.0049)(807²) = 1,595.56005 = 1.6 kJ

c) KE = ½(91 400 000)(23(0.514))² = 6,387,017,558.8 = 6.4 GJ

You might be interested in
What force is needed to accelerate 300kg rock as a rste of 4m/s​
Natali [406]

Answer:

60 maybe

Explanation:

4 0
3 years ago
Read 2 more answers
Two resistors A and B are arranged in series in one branch of a parallel arrangement. The other branch contains a single resisto
Ganezh [65]

Answer:

Explanation:

A and B are in series , Total resistance = Ra + Rb

This resistance is in parallel with single resistor C

Equivalent resistance Re = Rc x ( Ra + Rb ) / [Rc + ( Ra + Rb )]

Now this combination is in series in single resistance D .

Total resistance = Rd + Re

= Rd + { Rc x ( Ra + Rb ) / [Rc + ( Ra + Rb )] }

5 0
3 years ago
What is the current in a 120V circuit if the resistance is 20Ω?
Kaylis [27]

We have: I=\frac{U}{R}=\frac{120}{20}=6A

ok done. Thank to me :>

6 0
2 years ago
Answer the question with step.​
Maru [420]

Answer:

f1/f2 =W1/W2 = 1/3

.0 f2 = 3f1

As ,

1/F= 1/f1 +1/f2

...1/40 = 1/f1 - 1/3f1

f1=> 80/3 cm

... f2 = 2f1 = 3 x 80/3 = 80 cm

7 0
3 years ago
What is the restoring force of a pendulum
salantis [7]

Answer:

the Restoring force causes the vibrating object to go slower going further from the equilibrium position and to go faster as it approaches the equilibrium position. the restoring force is what is causing the vibration The tension force comes from the string tugging on the bob of the pendulum.

Explanation:

3 0
3 years ago
Other questions:
  • Edwin Hubble was one of the first scientists to show that galaxies are getter farther apart from each other. (A.) True (B.) Fals
    10·2 answers
  • The wave equation says that a waves ________ is equal to its wavelength times its frequancy
    15·2 answers
  • What happened to the sedimentary rock layers that first formed over the ancient rock
    8·1 answer
  • Read the following characteristics of stars and choose the one that is correct. plz help quickly
    8·1 answer
  • Data is information from which conclusions can be drawn.. . True. False
    14·2 answers
  • You are driving home from school steadily at 95 km/h fro 130 km. It begins to rainand you slow to 65 km/h. You arrive home after
    7·1 answer
  • Three balls are thrown off the top of a building, all with the same speed but with different launch angles (position is given in
    9·1 answer
  • Billy drops a ball from a height of 1 m. The ball bounces back to a height of 0.8 m, then
    12·1 answer
  • 10. If a plane travels north for 2.5 hours at a velocity of 150 km/hr what distance did it travel?
    7·1 answer
  • A nonconducting sphere has mass 80.0 g and radius 20.0cm . A flat, compact coil of wire with five turns is wrapped tightly aroun
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!