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3 years ago

Why are some pots and pans designed with wooden handles?

Physics

2 answers:

Elena-2011 [213]3 years ago

7 0

Wood doesn't get hot when it heats up, so number 3

Art [367]3 years ago

6 0

Answer: Wood is an insulator.

Explanation: Conductors are those substances which allow heat and electricity to pass through them.Example: Metals

Insulators are those substances which do not allow heat and electricity to pass through them. Example: wood

Pots and pans should be made of conducting material as the heat needs to be transferred from the burner to the pot and then to the food for cooking.

But the handles should be made from insulators so that they do not become hot and thus we can hold the utensil using the handles without getting burnt.

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Which is NOT a unit of force? A. Dyne B. Joules C. Newton D. Pound

kaheart [24]

The Joule is a unit of energy, not Force

8 0

4 years ago

(OUR

natta225 [31]

George's speed per second is 76.92 m/s

George's velocity in meters per second was 38.46 m/s (North)

Explanation:

When dividing the total distance covered by object by time, we get the value for average speed.

$\text { speed }=\frac{\text {distance}}{\text {time}}$

Given:

t = 13 seconds

Calculate the distance without consideration of motion’s direction. So, the distance walks 750 m north first, and then turn around walks 250 m south, so the total distance covered is

d = 750 + 250 = 1000 meters

To find the rate per second, simply divide the distance by the time.

$\text { speed }=\frac{1000}{13}=76.92 \mathrm{m} / \mathrm{s}$

In given case, the students walks 750 m north first, and then turn around walk 250 m south. The displacement is the distance in a straight line between the initial and final position: therefore, in this case, the displacement is

d = 750 (north) - 250 (south) = 500 m (north)

The time taken is t = 13 s

So, the average velocity is $\text {velocity}=\frac{500}{13}=38.46 \mathrm{m} / \mathrm{s}$ (North)

And the direction is north (the same as the displacement).

3 0

4 years ago

A same-size iron ball and wooden ball are dropped simultaneously from a tower and reach the ground at the same time. The iron ba

Papessa [141]

Answer:

momentum of iron ball is greater than wooden ball

Explanation:

when metal ball (iron ball) and wooden drop are drop from same elevation and reaching the ground after same time. at this position the iron ball has greater momentum than wooden ball

we know that momentum is defined as

P=Mv

and we know also that mass of iron ball is greater than mass of wooden ball and they reached on ground at same time and same distance it mean also velocity will be same for both ball. therefore from above relation we have

Miron*V > Mwood*V i.e.

momentum of iron ball is greater than wooden ball

5 0

4 years ago

The mirror used in search light is:

dolphi86 [110]

Answer:

Explanation:

6 0

3 years ago

The capacitance of the variable capacitor of a radio can be changed from 100 to 350 pF by turning the dial from 0° to 180°. With

tangare [24]

Answer:

0.7 mJ

Explanation:

Identify the unknown:

The work required to turn the dial from 180° to 0°

List the Knowns:

Capacitance when the dial is set at 180°: C = 350 pF = 350 x 10^-12 F Capacitance when the dial is set at 0°: C = 100 pF = 100 x 10^-12 F

Voltage of the battery: V = 130 V

Set Up the Problem:

Energy stored in a capacitor:

U_c=1/2*V^2*C

=1/2*Q^2/C

When the dial is set at 180°:

U_c=1/2*(130)^2*350*10^-12=10^-4

Q=√2*U_c*C=4*10^-7

When the dial is set at 0°:

U_c=1/2*(4*10^-7)^2/100*10^-12

=8*10^-4 J

Solve the Problem:

ΔU_c=7*10^-4 J

=0.7 mJ

note:

there maybe error in calculation but method is correct

4 0

3 years ago

Read 2 more answers