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
MrRa [10]
3 years ago
13

1. A stationary 50 tonne submarine fires a missile of mass 40kg at

Physics
1 answer:
White raven [17]3 years ago
8 0

The velocity of the submarine immediately after firing the missile is 0.0104 m/s

Explanation:

Mass of the submarine M=50 tonne=50\times 1000=50000kg

Mass of the missile m=40  kg

velocity of the missile v= 13m/s

we have to calculate the velocity of the submarine after firing

This is the recoil velocity and its expression is derived from the law of conservation of momentum

recoil velocity of the submarine

V=-mv/M\\=-40\times 13/50000\\=0.0104 m/s

You might be interested in
A 3.00-kg ball swings rapidly in a complete vertical circle of radius 2.00 m by a light string that is fixed at one end. The bal
Setler [38]

Answer

given,

mass of the ball = 3 kg

swing in vertical circle with radius = 2 m

   work done by the gravity = ?          

   work done by the tension = ?            

Work done by the gravity = - m g Δh            

 Δ h = 2 + 2 = 4 m                                                                

Work done by the gravity =- 3 \times 9.8 \times 4

                                           = -117.6 J                  

work done by gravity is equal to -117.6 J            

Work done by tension will be equal to zero.        

Zero because tension is always perpendicular to velocity

work done by tension is equal to 0 J                          

7 0
3 years ago
planet a takes one year to go around the sun at a distance of one au. .planet b is three a u. from the sun. how many years does
shtirl [24]

Answer:

3 years

Explanation:

Find the circumference of each orbit in AU.

2xπx1=6.283185307

2xπx3=18.84955592

Divide them.

18.84955592/6.283185307=3

3 years

4 0
3 years ago
What are the four factors that determine weather?
garik1379 [7]
Solar Radiation, Orbital Distance, Air Pressure, and the Abundance of water.
8 0
3 years ago
Use the exact values you enter to make later calculations. You repeat the same experiment that you did in the lab with the force
frutty [35]

Answer:

sorry I don't know but I hope you get a answer soon

7 0
3 years ago
8. What is the momentum of a 120-kg professional fullback running<br> across the line at 11.2 m/s?
Alchen [17]

Answer:

134r kgm^-1 or 1344 kg /m

Explanation:

Momentum is is given by:

p=mv

Where:

p is momentum, m is mass in kg and v is velocity in ms−1

p=120kg×11.2 m/ s= 1344 kgms=1344kgm^−1

5 0
3 years ago
Other questions:
  • The rms current in an ac current is 3.6<br> a. find the maximum current
    6·1 answer
  • Anyone good with this type of vocabulary. I really need to get this done to study.
    9·1 answer
  • Games in Space: On Earth, an astronaut throws a ball straight upward, and it stays in the air for a total of 3.0s before they ca
    12·1 answer
  • If a car has a velocity of 40 km/h west and then comes to a stop in 5 s, what is its acceleration in m/s2?
    10·1 answer
  • A solid uniform cylinder is rolling without slipping. What fraction of its kinetic energy is rotational?
    10·1 answer
  • A circuit has a 9.0 V power supply and two 15 Ω resistors connected in parallel. what is the voltage across each resistor?
    8·1 answer
  • In 3.0 seconds, a wave generator produces 15 pulses that spread over a distance of 45 centimeters. Calculate its period.
    15·1 answer
  • An 8 kg cat is running 4 m/s. How much kinetic energy does it have?
    12·1 answer
  • In order to get the most accurate mass measurement, you must __(blank)__.
    5·1 answer
  • I need help with problem C, finding the area of the accel. v time graph
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!