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
Setler [38]
3 years ago
8

A 26 kg body is moving through space in the positive direction of an x axis with a speed of 350 m/s when, due to an internal exp

losion, it breaks into three parts. One part, with a mass of 7.8 kg, moves away from the point of explosion with a speed of 180 m/s in the positive y direction. A second part, with a mass of 8.8 kg, moves in the negative x direction with a speed of 640 m/s. What are the (a) x-component and (b) y-component of the velocity of the third part
Physics
1 answer:
Gnom [1K]3 years ago
7 0

Answer:

a.) 1567.2 m/s

b.) 149.4 m/s

Explanation:

Given that a 26 kg body is moving through space in the positive direction of an x axis with a speed of 350 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 7.8 kg, moves away from the point of explosion with a speed of 180 m/s in the positive y direction. A second part, with a mass of 8.8 kg, moves in the negative x direction with a speed of 640 m/s.

The x-component of the third part can be calculated by assuming that it moves in a positive x axis.

The third mass = 26 - ( 7.8 + 8.8)

The third mass = 26 - 16.6

The third mass = 9.4kg

since momentum is conserved, the momentum before explosion will be equal to sum of the momentum after explosion

26 x 350 = -8.8 x 640 + 9.4V

9100 = -5632 + 9.4V

9.4V = 9100 + 5632

9.4V = 14732

V = 14732/9.4

V = 1567.2 m/s

(b) y-component of the velocity of the third part will be

7.8 x 180 = 9.4 V

1404 = 9.4V

V = 1404/9.4

V = 149.4 m/s

You might be interested in
) The square plates of a 5000-pF parallel-plate capacitor measure 50 mm by 50 mm and are separated by a dielectric that is 0.23
notsponge [240]

Answer:

4 x 10⁻⁴ J

Explanation:

C = 5000 pF, V = 400 V

Energy = CV²/2 = 5000 x 10⁻¹² x 400²/2 = 4 x 10⁻⁴ J

6 0
2 years ago
The "Giant Swing" at a county fair consists of a vertical central shaft with a number of horizontal arms attached at its upper e
Mashcka [7]

Answer:

Explanation:

When the central shaft rotates , the seat along with passenger also rotates . Their rotation requires a centripetal force of mw²R where m is mass of the passenger and w is the angular velocity and R is radius of the circle in which the passenger rotates.

This force is provided by a component of   T , the tension in the rope from which the passenger hangs . If θ be the angle the rope makes with horizontal ,

T cos θ will provide the centripetal force . So

Tcosθ = mw²R

Tsinθ component will balance the weight .

Tsinθ = mg

Dividing the two equation

Tanθ = \frac{g}{\omega^2R}

Hence for a given w , θ depends upon g or weight .

8 0
3 years ago
Read 2 more answers
What happens if different lights are shined through a prism
shusha [124]
The light will bend when in 
7 0
3 years ago
Read 2 more answers
Please help.. I'm desperate.
rosijanka [135]

Answer:

Newton's Second Law tells us that the more mass an object has, the more force is needed to move it. A larger rocket will need stronger forces (eg. more fuel) to make it accelerate. The space shuttles required seven pounds of fuel for every pound of payload they carry.

Explanation:

7 0
3 years ago
Explain what happens to light when it is refracted at the surface of water.
stepan [7]
Light will make the object appear “broken” or in an irregular shape.

Refraction is the change in direction of waves.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which part of the electromagnetic spectrum generally gives us our best views of stars forming in dusty clouds?
    9·1 answer
  • Why scientifically died it hurt when you stub your toe in the corner of a wall?
    7·1 answer
  • 100 Points
    14·1 answer
  • What did Rutherford’s model of the atom include that Thomson’s model did not have?
    15·2 answers
  • Find the maximum number of lines per centimeter a diffraction grating can have and produce a first-order maximum for the largest
    5·1 answer
  • What is perfect machine?Why is this machine not possible in the real life?​
    13·1 answer
  • Translate the word phrase into an algebraic equation: the quotient of 22 and 2 is equal to 11.
    13·1 answer
  • Can someone please answer this, ill give you brainliest Would be very appreciated.
    12·2 answers
  • The sales price of a product is $2 per unit; the variable cost is $1 per unit; and fixed costs total $1,000. how many units must
    14·1 answer
  • A proton is held at rest in a uniform electric field. When it is released, the proton will lose?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!