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saw5 [17]
3 years ago
8

Conservation of linear momentum

Physics
1 answer:
ch4aika [34]3 years ago
5 0

Answer:

the common velocity of the cars after the collision is 2m/s and the change in the kinetic energy is the speed the objects are moving at

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A scientist views an unknown cell under a microscope. Which of the following observations would support the claim that it is a p
alisha [4.7K]

Answer:

Explanation:

Sorry I can’t give you an exact answer, but it is it is either A or D hope this helps!

5 0
4 years ago
Read 2 more answers
Nl
Sedaia [141]

Answer:

10 mL= 0.01 L

Explanation:

V(water) = 20 mL

V(water + a marble) = 30 mL

V(marble) = V(water + a marble) - V(water) = 30 mL - 20 mL = 10 mL= 0.01 L

6 0
4 years ago
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4 0
3 years ago
A high school physics student is sitting in a seat read-
Nataly_w [17]

The equilibrium condition allows finding the result for the force that the chair exerts on the student is:

  • The reaction force that the chair exerts on the student's support is equal to the student's weight.

Newton's second law gives the relationship between force, mass and acceleration of bodies, in the special case that the acceleration is is zero equilibrium condition.

            ∑ F = 0

Where F is the external force.

The free body diagram is a diagram of the forces on bodies without the details of the shape of the body, in the attached we can see a diagram of the forces.

Let's analyze the force on the chair.

            N_{chair} - W_{chair} - W_{student} = 0 \\ \\N_{chair} = W_{chair} + W_{student}

Let's analyze the forces on the student.

          N_{student} - W_{student} = 0  \\N_{student} = W _{student}

           

In conclusion using the equilibrium condition we can find the result for the force that the chair exerts on the student is:

  • The reaction force that the chair exerts on the student's support is equal to the student's weight.

Learn more here: brainly.com/question/18117041

7 0
3 years ago
A Micro –Hydro turbine generator rotor is accelerating uniformly from an angular velocity of 610 rpm to its operating angular ve
solniwko [45]

Answer:

The rotor's angular velocity is 82.73rad/s

Explanation:

It is a curvilinear movement of a constant radius. If there is uniform angular acceleration, then it is a circular motion with constant acceleration, whose equations are analogous to that of the translational motion.

Calculating the initial velocity of the rotor, V1 in rad/s

V1 = 610rev/minute × 6.28 × 1miute/60secs

V1 = 63.85rad/s

Using kinematic equation to calculate the final velocity of the rotor

Given:

Angular acceleration = 5.9rad/s^2

Time,t= 3.2seconds

V2 = V1 + a × t

V2 = 63.85 + (5.9)× (3.2)

V2 = 63.85 + 18.88

V2 = 82.73rads/s

4 0
3 years ago
Read 2 more answers
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