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natta225 [31]
3 years ago
13

Overtime, a household freezer will develop a layer of ice that coats the inside an grows thicker over time. Describe what happen

s to cause this layer of ice to form and grow.
Physics
2 answers:
vodka [1.7K]3 years ago
7 0

Answer:

Because of low temperature of freezer, the moisture present inside the fridge condenses and form a layer of ice inside the freezer. Moisture present in the food items kept inside the freezer also condenses and increases the thickness of ice layer inside the freezer. Every time we kept new food item inside the fridge moisture of that food items condenses and increase the thickness of ice layer

shutvik [7]3 years ago
6 0
The moisture in the freezer will freeze due to the cold temperature, and form a layer of ice (the water molecules expand and solidify). Each time the freezer is opened, the moisture that enters via the air will freeze and form a layer of ice on top of the previous layer, causing the ice to grow thicker over time.
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A racing car whose mass is 1.2 X 10^3 kg is travelling at 8.9 m/s. It stops with a constant deceleration in a distance of 1.8X10
Alexeev081 [22]

given that initial speed of the car is

v_i = 8.9 m/s

now after travelling the distance d = 1.8 * 10^1 m the car will stop

so here we can use kinematics to find the acceleration of car

v_f^2 - v_i^2 = 2 a d

0 - 8.9^2 = 2 a d

here we have

- 79.21 = 2*(18)*a

a = -2.2 m/s^2

net force applied due to brakes of car is given by Newton's II law

F = ma

here we have

mass = 1.2 * 10^3 kg

F_{net} = 1.2 * 10^3 * 2.2

F_{net} = 2.64 * 10^3 N

now we can say

F_{net} = F_1 + F_2

2.64 * 10^3 = 1.8 * 10^3 + F_2

F_2 = 8.4 * 10^2 N

So the force applied due to brakes is given as above

7 0
3 years ago
What are the body measurements​
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6 0
3 years ago
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In a game of pool, why will the balls eventually stop after a collision?
Aneli [31]

As a ball rolls ... even if there were no air resistance ... the ball
has to push down and climb over every one of those little fibers
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7 0
3 years ago
A uniform 4.4 t magnetic field points north. if an electron moves vertically downward (toward the ground) with a speed of 2.5 ×
Reil [10]

Answer:

1.8\cdot 10^{-11} N

Explanation:

The force acting on the electron due to the magnetic field is

F=qvB sin \theta

where

q=1.6\cdot 10^{-19} C is the charge of the electron

v=2.5\cdot 10^7 m/s is its speed

B=4.4 T is the intensity of the magnetic field

\theta=90^{\circ} is the angle between the direction of the field and the velocity of the electron

Substituting all the numbers into the equation, we find

F=(1.6\cdot 10^{-19}C)(2.5\cdot 10^7 m/s)(4.4 T) sin 90^{\circ}=1.8\cdot 10^{-11} N

8 0
4 years ago
A 45-mH inductor is connected in series with a 60-Ω resistor through a 15-V dc power supply and a switch. If the switch is close
egoroff_w [7]

Answer:

The current is 0.248 A

Explanation:

Given that,

Inductor L= 45\times10^{3}\ H

Resistance R= 60\Omega

Voltage = 15 volt

Time t =7.0\times10^{-3}\ sec

We need to calculate the current

Using formula of current

I=\dfrac{V}{R}(1-e^{\dfrac{-R}{L}}t)

Where, V = voltage

R = resistance

L = inductance

T = time

Put the value into the formula

I=\dfrac{15}{60}(1-e^{\dfrac{-60}{45\times10^{3}}}\times7\times10^{-3})

I=0.248\ A

Hence, The current is 0.248 A.

4 0
3 years ago
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