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3 years ago

Total amount of kinetic and potential energy in a system

1 answer:

6 0

The Total Mechanical Energy
As already mentioned, the mechanical energy of an object can be the result of its motion (i.e., kinetic energy) and/or the result of its stored energy of position (i.e., potential energy). The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy.

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Estimate the linear separation (in kilometers) of two objects at a distance of 2.6 × 108 km that can just be resolved by an obse

cestrela7 [59]

Answer:

34892 km

34.892 km

Explanation:

L = Distance of two objects = $2.6\times 10^8\ km$

$\lambda$ = Wavelength = 550 nm

When d = Diameter of pupil = 5 mm

Linear separation

$\frac{D}{L}=\frac{1.22\lambda}{d}\\\Rightarrow D=\frac{1.22\lambda L}{d}\\\Rightarrow D=\frac{1.22\times 550\times 10^{-9}\times 2.6\times 10^8\times 10^3}{5\times 10^{-3}}\\\Rightarrow D=34892000\ m=34892\ km$

Linear separation = 34892 km

When d = 5 m

$\frac{D}{L}=\frac{1.22\lambda}{d}\\\Rightarrow D=\frac{1.22\lambda L}{d}\\\Rightarrow D=\frac{1.22\times 550\times 10^{-9}\times 2.6\times 10^8\times 10^3}{5}\\\Rightarrow D=34892\ m=34.892\ km$

Linear separation = 34.892 km

6 0

3 years ago

For an object to be seen, light must leave _______ and enter _______.

amm1812

The answers are going to be reflects and rays?? hope that helped.

4 0

3 years ago

An example of vector quantity thats not a force

Nataliya [291]

Examples of such quantities include distance, displacement, speed, velocity, acceleration, force, mass, momentum, energy, work, power, etc. All these quantities can by divided into two categories - vectors and scalars. A vector quantity is a quantity that is fully described by both magnitude and direction.

6 0

3 years ago

A block of mass m=16.8 kg is sliding on a surface with initial velocity v=23.2 m/s. The block has a coefficient of kinetic frict

Firdavs [7]

Answer:

t = 23.92 s

Explanation:

Newton's second law:

∑F = m*a Formula (1)

∑F : algebraic sum of the forces in Newton (N)

m : mass s (kg)

a : acceleration (m/s²)

We define the x-axis in the direction parallel to the movement of the block and the y-axis in the direction perpendicular to it.

Forces acting on the block

W: Weight of the block : In vertical direction, downward

FN : Normal force : perpendicular to the floor, upward

fk : Kinetic friction force: parallel to the floor and opposite to the movement

F = 86.4 N , in the direction of the motion

Calculated of the W

W= m*g

W= 16.8 kg* 9.8 m/s² = 164.64 N

Calculated of the FN

We apply the formula (1)

∑Fy = m*ay ay = 0

FN - W = 0

FN = W

FN = 164.64 N

Calculated of the fk

fk = μk*FN

fk = 0.426* 164.64 N

fk = 70.13 N

We apply the formula (1) to calculated acceleration of the block:

∑Fx = m*ax , ax= a : acceleration of the block

F - fk = m*a

86.4 -70.13 = (16.8)*(-a)

16.26 = (16.8)*(-a)

a = -(16.26 )/ (16.8)

a = - 0.97 m/s²

Kinematics of the block

Because the block moves with uniformly accelerated movement we apply the following formula :

vf = v₀ + a*t Formula (2)

Where:

t: time interval (m)

v₀: initial speed (m/s)

vf: final speed (m/s)

Data:

v₀ = 23.2 m/s

vf = 0

a = -0.97 m/s²

Time it takes for the block to stop

We replace data in the formula (2) to calculate the time

vf= v₀+a*t

0 = 23.2+( -0.97)*t

(0.97)*t = 23.2

t = 23.2 / (0.97)

t = 23.92 s

7 0

3 years ago

Is it possible to code the impact force using an accelerometer?

Naddika [18.5K]

Yes, it possible to code the impact force using an accelerometer.

Accelerometers can be used to measure vibration on cars, machines, buildings, process control systems and safety installations

<h3>What is an Accelerometer ?</h3>

An accelerometer is a device that measures the vibration, or acceleration of motion of a structure.

The force caused by vibration or a change in motion (acceleration) causes the mass to "squeeze" the piezoelectric material which produces an electrical charge that is proportional to the force exerted upon it.

They can also be used to measure seismic activity, inclination, machine vibration, dynamic distance and speed with or without the influence of gravity.

Learn more about Accelerometer meter here:

brainly.com/question/15185937

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6 0

1 year ago

Total amount of kinetic and potential energy in a system ​

Total amount of kinetic and potential energy in a system