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3 years ago

|:Give one word answer1. An object that allows whole light to pass through it _______

Physics

1 answer:

mina [271]3 years ago

5 0

Answer:

Translucent object

Explanation:

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Two students pushes on a box in the same direction , and one pushes In The opposite direction.what is the net force on the box i

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If they are both pushing with the same force but in opposite directions,
and if there are no other forces on the box besides them pushing, then
the net force on the box is zero and it just lays there, as if there were
no forces on it at all.

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4 years ago

Simple Circuit and Ohm's Law Check-for-Understanding

Vanyuwa [196]

Answer:

current, only

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current:I

voltage:U

resistance:R

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Increasing the battery cause the increasing in the voltage. Resistance does not normally change. And the current would increase.

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3 years ago

Read 2 more answers

The block in the drawing has dimensions L0×2L0×3L0,where L0 =0.5 m. The block has a thermal conductivity of 200 J/(s·m·C˚). In d

Dennis_Churaev [7]

Answer:

$Q_p=18000\ J$

$Q_o=8000\ J$

$Q_g=72000\ J$

Explanation:

Given:

Length of block, $l=3L_o=3\times 0.5=1.5\ m$

Breadth of block, $b=L_o=0.5\ m$

height of block, $h=2L_o=2\times 0.5=1\ m$

Thermal conductivity of the block, $k=200\ W.m.^{\circ}C$

Temperature on the hotter side, $T_H=37^{\circ}C$

temperature on the cooler side, $T_L=7^{\circ}C$

time for which the heat flows, $t=4\ s$

REFER THE ATTACHED IMAGE FOR THE REFERENCE

The rate of heat flow using Fourier's law of conduction is given as:

$\frac{Q}{t}=k.A.\frac{dT}{dx}$

Now the amount heat flow perpendicular to the pink surface:

$\frac{Q_p}{4}=200\times (0.5\times 1.5).\frac{30}{1}$

$Q_p=18000\ J$

Now the amount heat flow perpendicular to the orange surface:

$\frac{Q_o}{4}=200\times (0.5\times 1).\frac{30}{1.5}$

$Q_o=8000\ J$

Now the amount heat flow perpendicular to the green surface:

$\frac{Q_g}{4}=200\times (1.5\times 1).\frac{30}{0.5}$

$Q_g=72000\ J$

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3 years ago

You tie a string to the ceiling and attach a weight to the end. You hold the weight next to your face but not touching it and th

Orlov [11]

Answer:

Depends on how long the string is, how heavy the weight, and how high you let go of it.

But it will most likely hit you :)

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3 years ago

Inside a NASA test vehicle, a 3.50-kg ball is pulled along by a horizontal ideal spring fixed to a friction-free table. The forc

erastova [34]

F(of spring)=230x=ma=3.5(5)=17.5=230x; x=0.07m.

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3 years ago

|:Give one word answer1. An object that allows whole light to pass through it _______​

|:Give one word answer1. An object that allows whole light to pass through it _______