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
Eddi Din [679]
3 years ago
11

A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass o

f the cannon?
(Unit = kg)
Remember: right is +, left is -
Physics
1 answer:
Bond [772]3 years ago
3 0

Answer:

1700 kg

Explanation:

Let’s use conservation of momentum

32.5 * 388 = 7.42 * mc

mc = 1699.46

mc = 1700 kg

You might be interested in
Which one doesn't belong in the group? oxygen, sulfur, selenium,
vlada-n [284]
It’s gonna be Oxygen ....
3 0
3 years ago
What is x-rays ? and how it's formed ?​
tia_tia [17]

X - rays are highly penetrating electromagnetic radiations that are formed when the cathode rays strikes a dense metal.

It has many characteristics such as :

  • bears no charge.

  • travels with the speed of light.

  • can ionize gases.
3 0
2 years ago
Teams red and blue are having a tug-of-war. According to Newton's third law, the force with which the red team pulls on the blue
Zielflug [23.3K]
There are a few reasons that one teams could win. It depends if the on of the  teams has a better grip on the rope or not or maybe one off the teams has more friction between the ground and there shoes. So really it no matter what one of the teams will win.
7 0
3 years ago
Two long, parallel, current-carrying wires lie in an xy-plane. The first wire lies on the line y = 0.300 m and carries a current
Marrrta [24]

Answer:

Explanation:

Since the wires attract each other , the direction of current will be same in both the wires .

Let I be current in wire which is along x - axis

force of attraction per unit length between the two current carrying wire is given by

\frac{\mu_0}{4\pi}  x \frac{2 I_1\times I_2}{d}

where I₁ and I₂ are currents in the wires and d is distance between the two

Putting the given values

285 x 10⁻⁶ = 10⁻⁷ x \frac{2\times25.5\times I_2}{.3}

I₂ = 16.76 A

Current in the wire along x axis is 16.76 A

To find point where magnetic field is zero due the these wires

The point will lie between the two wires  as current is in the same direction.

Let at y = y , the neutral point lies

k 2 x  \frac{16.76}{y} = k 2 x \frac{25.5}{.3-y}

25.5y = 16.76 x .3 - 16.76y

42.26 y = 5.028

y = .119

= .12 m

3 0
3 years ago
Newtown third law applies to blank of objects​
fomenos

Answer:

All

Explanation:

I'm not sure what you meant but Newton's third law which basically states that every action has an equal and opposite reaction applies to <em>all</em> objects. So I think the answer is all.

8 0
3 years ago
Other questions:
  • Encoding information occurs throughout?
    10·1 answer
  • The product of the synthesis reaction between sodium and chlorine gas is ?
    15·2 answers
  • An 92-kg football player traveling 5.0m/s in stopped in 10s by a tackler. What is the original kinetic energy of the player? Exp
    6·1 answer
  • Two loudspeakers in a plane, 5.0m apart, are playing the same frequency. If you stand 14.0m in front of the plane of the speaker
    14·1 answer
  • 6. A cat walks 1.5km South and then 2.4km East. What is the total displacement of the cat?
    5·1 answer
  • A push or pull that causes an object's motion to change is called _____
    11·1 answer
  • What are the constant parameters in Charles' gas law?
    15·1 answer
  • An iron wire and a copper wire of the same length have the same potential difference applied to them. What must be the ratio of
    10·1 answer
  • The motion map shows an object’s position and velocity at given times. A long black arrow right labeled x. Above that are 5 gree
    14·2 answers
  • A disk, initially rotating at 120 rpm, is slowed down with a constant acceleration of magnitude 4 rad s2. If the disk has diamet
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!