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I was wondering how two BODIES MADE of the same material and having the same Surface AREA but DIFFERENT Volumes, heated to the same temperature, would cool. Would they cool at the same rate? I know that Stefan's Law states that E=σAT4E=σAT4 so THEORETICALLY they should radiate the same amount of energy per unit time and hence cool at the same rate. But doesn't this violate the conservation of energy? How could two bodies having different thermal energies(due to different volumes and masses) have the same rate of cooling?

Earth completes ONE revolution in 24 hours .
it MEANS, angular displacement in 24 hours = 360°
so, angular displacement in 1 hour = 360/24 = 15° .
hence, angular displacement MADE by earth in one hour = 15°
we know, relation between RADIAN and degree,
360° = 2π radian
1° = 2π/360 radian = π/180°
15° = 15π/180 = π/12 radian.

angular displacement made by earth in one hour = π/12 radian.

DECREASE in the VELOCITY of BODY with RESPECT to TIME

Spring force is the REACTIVE force DEVELOPED on the spring due to change in its absolute length or free length. Spring force developed due to both COMPRESSION and extension of free length of spring. The spring force (REACTION) will always act in opposite direction of its cause.

Next is tension of Spring, it is also reactive force, developed in spring due to extension of its free length for the case of normal spring.

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a semiconductor is a CONDUCTOR as well as insulator . a semiconductor at nearly 0K behaves as insulator.

there are two main types of semiconductors P type semi conductor and N type semiconductor

P type semiconductor is obtained by dopping an INTRINSIC semiconductor with elements of group 3 e.g boron and aluminium

while

N type semiconductor is obtained by dopping pure semiconductor with pentavalent impurity (elements of group three) e.g phosphorus .

HEY DEAR HERE IS YOUR ANSWER ✌✌❤❤

1. A bachelor's degree - computer
science.

2. computer systems engineering , software engineering or mathematics or COMPLETION of a college program in CS is usually required.

3. A master's or doctoral degree in a RELATED discipline MAY be Required.


HOPE IT HELPS U.✌✌
# BE BRAINLY.❤❤

the DISTANCE between POLE and princiqal FOCUS is called
focal LENGHT

1/Req = 1/R1 + 1/R2 + 1/R3....

The CONDITIONS are:
1)ROUGH surface
2) THREADS

For EASIER CALCULATION ND for more ACCURACY

Speed of train = 54 × 5/18 = 15 m/s
Length of train = 15 × 30 = 450 m

To cross platform of 180 m, train has to travel 450+180 = 630 m

Therefore, time to cross platform
= 630/15 = 42 SECONDS

The ANGLE is 90° BCZ they R PERPENDICULAR to each other

The MAGNITUDE of forces is GIVEN by √(p^2+q^2).

the direction of forces is given by psin THETA(q + PCOS theta)

where theta is the ANGLE between forces.

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The “blood moon” LUNAR eclipse happens about twice a year—including early WEDNESDAY morning—when the Sun, Earth and moon line up so that the moon passes through the Earth'sshadow, NASA explains in the video above. This causes moon to appear a dull RED color due to sunlight scattered through the Earth's atmosphere.

Its referractive INDEX will be 2

Central tendency refers to and LOCATES the CENTER of the distribution of values
Dispersion is the amount of SPREAD of data about the center of a data set.

25/10×50=125 is the SOLUTION

What is the electric FIELD at POINT (1,0,2) when theelectrostatic potential at any point p (x, y, Z ) isgiven by v=-4x? What is electric field due ...

Missing: 5y ‎| ‎Must include: ‎5y

A person travelled from Banglore to Chennai and found his AVERAGE SPEED to be 60 km/h
Let

for the return journey from Chennai to Banglore , he travelled at night and found his average speed to be 90 km/h
Let

use the formula,


HENCE, average speed for the complete round TRIP is 72 km/h

Hey MATE
Here is UR ANSWER

EUKARYOTIC cells is present in higher number in secretary cell
Thanks ☺

Here is your answer

TEMPERATURE of a hot moving BODY can be measured by PYROMETER

HOPE it helps and mark it brainliest

Diamgnetic FIELD is the CORRECT ANSWER

HERE ARE FOUR METHODS FROM NCERT:
1
Create a “rougher” or more adhesive point of contact. When two materials slide or rub against each other, three things can happen: small nooks, crannies, and irregularities on the surfaces can catch on each other; one or both surfaces can deform in response to the motion; and, finally, the atoms within each surface can interact with each other.[2] For practical purposes, all three of these effects do the same thing: generate friction. Picking surfaces that are abrasive (like sandpaper), deform when pressed (like rubber), or have adhesive interactions with other surfaces (like tacky glue, etc.) is a straightforward way to increase friction.
Engineering textbooks and similar resources can be great tools when picking which materials to use to generate high friction. Most standard building materials have known "friction coefficients" — that is, measures of how much friction they generate with other surfaces. Sliding friction coefficients for just a few common materials are listed below (higher coefficients indicate greater friction):
Aluminum on aluminum: 0.34
Wood on wood: 0.129
Dry concrete on rubber: 0.6-0.85
Wet concrete on rubber: 0.45-0.75
Ice on ice: 0.01



2
Press the two surfaces together harder. One fundamental principle of BASIC physics is that the friction an object experiences is proportional to its normal force (for our purposes, this is basically the force with which it presses into the object it's sliding against).[3] This means that the friction between two surfaces can be increased if the surfaces are pressed into each other with greater force.
If you've ever used a set of disc brakes (for instance, on a car or bike) you've observed this principle in action. In this case, pressing the brakes pushes a set of friction-generating PADS into metal discs attached to the wheels. The harder the brakes are pushed, the harder the pads get pressed into the discs and the more friction is generated. This can stop the vehicle quickly, but can also release lots of heat, which is why a set of brakes is usually quite hot after heavy braking.


3
Stop any relative motion. That is, if one surface is in motion with respect to another, stop it. Up until now, we've focused on kinetic (or "sliding") friction — the friction that occurs between two objects or surfaces as they rub against each other. In fact, this friction is different from static friction — the friction that occurs when one object starts to move against another. Essentially, the friction between two objects is greatest right when they start moving against each other. Once they're already in motion, friction decreases. This is one of the reasons why it's harder to start pushing a heavy object than it is to keep moving it.[5]
Try this simple experiment to observe the difference between static and kinetic friction: place a chair or another piece of furniture on a smooth floor in your house (not rug or carpet). Make sure the furniture doesn't have protective "foot pads" or any other sort of material on the bottom that might make it easy to slide across the floor. Try to push the furniture just hard enough so that it starts moving. You should notice that as soon as the furniture starts moving, it immediately becomes slightly easier to push. This is because the kinetic friction between the furniture and the floor is less than the static friction.


4
Remove lubrication between the two surfaces. Lubricants like oil, grease, petroleum jelly, and so on can greatly REDUCE the friction between two objects or surfaces. This is because the friction between two SOLIDS is generally much higher than the friction between those solids and the liquid between them. To increase friction, try removing any lubricants from the equation, using only "dry", un-lubricated parts to generate friction.
To see the friction-reducing potential of lubricants, try this simple experiment: Rub your hands together as if they're cold and you want to warm them up. You should immediately notice them heat up from the friction. Next, put a fair amount of lotion in your palms and try the same thing. Not only should it be easier to rub your hands against each other quickly, but you should also notice much less heat.

The speed of LIGHT in a VACUUM is approximately 300,000,000 meters per second, which is written as 3 * 10^8 m/s in scientific notation.

Because it WOULD INCREASE its SPEED and he MAY JUMP higher

the balance of protons and neutrons in a nucleus which DETERMINES whether a nucleus will be STABLE or UNSTABLE. too many neutrons or protons upset this balance disrupting the binding energy from the strong nuclear forces making the nucleus unstable. an unstable nucleus tries to ACHIEVE a BALANCED state by given off a neutron or proton and this is done via radioactive decay.

Scientific principle behind OPTICAL FIBRES. An optical fiber is a cylindrical dielectric WAVE guide that transmitslight along its axis, by the PROCESS of TOTAL internal reflection.

Any joint, as in a physical break or gap between members, in a concrete structure or building is a potential weak LINK which may LEAD to serviceability problems, LACK of durability or structural failure. YET seldom, if ever, is a building constructed without them.

.plant... COTTON, jute, Cottons are used to make Clothes it is very useful in Summar because they abosbe SWEAT. Jute..... They used to make House hold Product and making Ropes For Climbing. Animal.... Silk, Wool. Silk Is used to make clothes. Which HELPS in WINTER. Wool..
it is used to make Sweaters

warmer air rises as it is less DENSER. when cooler air replaces warmer air, temperature drops and HUMIDITY INCREASES. if humidity increases, air GETS saturated and process of condensation STARTS

Rate of CHANGE of MASS result in the change of MOVEMENTUM of OBJECT

The PRESSURE in the in atmosphere ( air) is same as the air pressure present in our lungs, stomach and ears and so it makes sure that we don't GET crushed



And our body is also flexible enough to cope with the INCREASE and decrease in the EXTERNAL or internal pressure



hope this helps you

1:4 is the RATIO of it QUESTION

Heya☺️☺️...
Robert HOOKE from ENGLAND was the SCIENTIST he discovered the law of ELASTICITY...
Hope it helps you...
@sidhu

Hii There!!!

Let u be the initial velocity, a = acceleration, t = TIME TAKEN by the body.

In the first 5seconds it MOVES 40m

s=ut+1/2 at^2

40=5u+1/2 5^2

8=u+5/2a

next it travels 65M in (5+5=10)

65=10u+1/2a 10^2

13=2u+10a

Therefore, u=19/2m/s


Hope it helps☺

Since FREE fall is independent to all time intervals then the graph will PERPENDICULAR to the y AXIS which is constant
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1)/|\. Is your
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White+dark blue= light blue
white +RED is orange
PURPLE+ orange is GREEN
orange + green is rrd

GIVEN velocity v = 20 m/s

let the given rectangular COMPONENT is

cos somponent, so 10 = v cos x

so, other component will be SIN component

i.e., v sin x

or, 10 = 20 cos x

or, cos x = 1/2

and as sin^2 x + cos^2 x = 1

or, 1 - cos^2 x = sin^2 x

or, 1 - (1/2)^2 = sin^2 x

so, sin x = sqrt( 1 - 1/4)

or, sin x = sqrt(3/4)

so, rectangular component is

20 sin x = 20 sqrt(3/4)

= 10 sqrt3

= 17.32 m/s