3 years ago

ANYONE HELP ME PLEASE!

Physics

1 answer:

DedPeter [7]3 years ago

7 0

Answer:

Kinetic energy is the energy in moving objects or mass. Examples include mechanical energy , electrical energy etc.

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blagie [28]

Answer:

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3 years ago

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Importance of electric circuit

Feliz [49]

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It is important because it carries useful energy through your house that you can use for a variety of tasks.

Explanation:

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8 0

3 years ago

An electric field of intensity 4.25 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.

Anestetic [448]

Answer:

Electric flux will be equal to $1041.25Nm^2/C$

Explanation:

We have given electric field $E=4.25KN/C=4.25\times 10^3N/C=4250N/C$

Sides of rectangle is given as 0.350 m wide and 0.700 m long

So length of rectangle l = 0.7 m and width w = 0.35 m

So area of rectangle $A=0.7\times 0.35=0.245m^2$

It is given that electric field is along the x axis

So angle between plane and electric filed $\Theta =0^{\circ}$

So electric flux will be equal to $\Phi =EAcos\Theta =4250\times 0.245\times cos0^{\circ}=1041.25Nm^2/C$

5 0

3 years ago

A horizontal spring with stiffness 0.5 N/m has a relaxed length of 19 cm (0.19 m). A mass of 22 grams (0.022 kg) is attached and

lawyer [7]

Answer:

v = 0.0147 m / s

Explanation:

For this exercise let's use energy conservation

Starting point. Fully stretched spring

Em₀ = Ke = ½ k (x-x₀)²

Final point. Unstretched position

Emf = K = ½ m v²

Emo = Emf

½ k (x- x₀)² = ½ m v²

v = √m/k (x-x₀)

Let's calculate

v = √(0.022 / 0.5) (0.26-0.19)

v = 0.0147 m / s

6 0

3 years ago

An object has a mass of 60 kg. It decelerates from 50 m/s to 20 m/s when a resultant force of 300 N acts on it. For how long doe

Pavlova-9 [17]

Force=300N
Mass=60kg

Find Acceleration

$\\ \rm\longmapsto F=ma$

$\\ \rm\longmapsto a=\dfrac{F}{m}$

$\\ \rm\longmapsto a=\dfrac{-300}{60}$

$\\ \rm\longmapsto a=-5m/s^2$

Now

u=50m/s
v=20m/s

Using 1st equation of kinematics

$\\ \rm\longmapsto v=u+at$

$\\ \rm\longmapsto t=\dfrac{v-u}{a}$

$\\ \rm\longmapsto t=\dfrac{20-50}{-5}$

$\\ \rm\longmapsto t=\dfrac{-30}{-5}$

$\\ \rm\longmapsto t=6$

4 0

3 years ago