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A similar procedure.

according to the problem Tsinteta=matcosteta=mgtanteta=a/gteta=a/gplease like my answer

The maindifferenceisin thepresence of a carbon atom;organic compoundswill contain a carbon atom (and often a hydrogen atom, to form hydrocarbons), while almost all inorganic compoundsdo not contain either of those two atoms.

Meanwhile,inorganic compounds include the salts, metals, and other elementalcompounds.

Energy Lost by the hot water=Energy Gain by the cold waterLet temperature of mixture be tThen, 5(80-t) = 15(t - 20)400-5t = 15t - 30020t = 700t = 35

The amount ofmomentumthat anobjecthas isdependentupontwo variables: how much stuff is moving and how fast the stuff is moving.Momentum dependsupon thevariablesmass and velocity. In terms of an equation, themomentum of an objectis equal to the mass of theobject times the velocity of theobject.

Consider a 0.5-kg physics cart loaded with one 0.5-kg brick and moving with a speed of 2.0 m/s. The total mass ofloadedcart is 1.0 kg and its momentum is 2.0 kg•m/s. If the cart was instead loaded with three 0.5-kg bricks, then the total mass of theloadedcart would be 2.0 kg and its momentum would be 4.0 kg•m/s. A doubling of the mass results in a doubling of the momentum.

It represents the reciprocal of c( speed of light)

(i) Locals are dependent on forest produce.(ii)Industries use tender leaves in industries.(iii)Forest Department controls resources from forest.(iv)NGO’s working for conservation of nature and wildlife

the anuj is in non-uniform motionthe shubham is in uniform motion

what is working of vfd

Determining brain changes over time is tricky. We have no ancient brains to weigh on a scale. We can, however, measure the inside of ancient skulls, and a few rare fossils have preserved natural casts of the interior of skulls. Both approaches to looking at early skulls give us evidence about the volumes of ancient brains and some details about the relative sizes of major cerebral areas.

Watt - hour efficiency of a battery is the ratio of the amount of energy available during the discharge of a battery to the amount of energy put in during charge.

Electrical energy = Voltage x Power x time

Energy available during discharge = VIt = 14 x 5 x 15 = 1050 kWh

Energy put in during charge = VIt = 15 x 10 x 8 = 1200 kWh

Watt - hour efficiency = (1050/1200)x100% = 87.5%

Ans. (d) 87.5%.

1. The sensation of feeling full: Separate part of the forebrain that is associated with hunger

2. Vomiting: Medulla in the hindbrain

3. Picking up a pencil and riding a bicycle: Cerebellum of the hindbrain

Ans. 21kwh=36×10^5 jouleSo, 1joule=1×10^3÷36×10^5 वॉट hour => 1 जूल =1/36×10^2

2 is correction because 1 Joule =1\36*10^2

Sound can propagate through solid liquid and gases that is through all the three states of matter.Hence option d

Let the two numbers be x and y

so, x+y = 100. => y = 1000-x

now for product to be maximum xy should be maximum or x(1000-x) should be maximum

so, its differentiation should be 0

=> d(x²-1000x)/dx = 0=> 2x -1000 = 0=> x = 1000/2 = 500

so numbers are 500 and 500

Force = mass × acceleration so here F = 3 × 8 / 2 = 12 N

I'm not able to understand

Water from various sources such as lakes and oceans becomes water vapour because of the hot sun. The water vapour rises in the air because of evaporation and is retained in the same form but invisible until condensation occurs. Since the vapour cannot rise more than a certain height, it remains in the same height above sea level.

When the wind blows, whether it is warm or cold, it carries the droplets of water and raises it. In the open atmosphere in the sky, huge amount of water vapour formed by evaporation get together to form clouds. Since the air cannot hold these enormous tiny droplets of water, it transforms the droplets into foggy clouds! Clouds are nothing but the water droplets accumulated together. When this cloud touches the cold surface such as a mountain or the cold air itself when it rises up, condensation occurs. Therefore, the cloud becomes tiny water droplets and falls down. This tiny water droplets falling down from the sky is what we call rain.

Total distance covered 10m in 40secTotal time taken= 2min 20sec= 140secTotal round completed = 140/40=3.5 rounds

So If an object moves from A to D, the shortest path will be from A to C. So displacement is AC, that we will find by phythogoras theorem.

AC2= AB2+BC2AC2= (10)2+(10)2AC2= 100+100AC2=200

AC = (200)1/2AC= 10× (2)½

angular speed = velocity/radius

Here, velocity = 1 cm/s r =10 cm

Angular speed = 1/10 =0.1 rad/sec

Option (C) is correct.

- add a rheostat in series with the field winding of a shunt motor. If you increase the resistance in field winding, field flux will be reduced and consequently, speed will be increased.

- you can use a rheostat in parallel with the field winding. When you decrease the parallel resistance of the field winding, current in the field branch will be divided, reducing the field flux. Thus speed will be increased.

c is the right answer

Usingv = u + at

v = 180 km/hru = 0t = 160 min = 160/60 = 8/3 hr

180 = 0 + a*8/3a = 180*3/8 = 67.5

Now, using s = ut + 1/2 * a * t^2 s = 0*8/3 + 1/2 * 67.5 * 8/3 * 8/3s = 0 + 67.5 * 4/3 * 8/3s = 67.5 * 32/9s = 7.5 * 32 = 240 km

Therefore, Length of lap = 240 km

(b) is correct option

thank you

B. PhloemExplaination : Phloem transportsfoodmaterials from the leaves to different parts of theplant. The transportation offoodin phloem is achieved by utilizing energy from ATP which helps in creating osmotic pressure thattransport foodfrom the area of high concentration to low concentration.

the expression is unit vector....

option C is the correct answer

option (a) is correct answer

iii) is the correct answer

It is a unit vector implies option a is correct

vector of magnitude root2

The answer to the question is vector of magnitude root under 2 i.e. option 3.

d is the correct answer

a is a correct answer ha

vector of magnitude root2 is the correct answer to this question

Thehalf-lifeof a radioactive element is the amount of time it takes forhalfof a sample of the element to decay away. It is smaller than themean lifetimeby a factor of ln(2), the natural logarithm of 2. Thehalf-lifeunits are time units such as seconds or years.

The microwaves in a microwave oven are not tuned to a resonant frequency of water. In fact, the microwaves generated inside a microwave oven are not really tuned to any particular resonant frequency since the waves are broadband. A broadband electromagnetic wave contains many frequencies. You need a monochromatic wave (a nearly single-frequency wave) in order to tune to a specific frequency. Laser beams are monochromatic. Radio waves from simple antennas are monochromatic. Microwaves in an microwave oven are not monochromatic.

Public Domain Image, source: Christopher S. BairdThe microwaves in a microwave oven are created by a device called a magnetron, which is a resonant cavity that causes current to naturally oscillate at high frequency, and thereby emit electromagnetic waves. The oscillation of the current in the magnetron is not caused by a delicately-controlled external circuit. Rather, the oscillation arises naturally from the way that electrons emitted by the cathode hit the anode in a random fashion and then slosh around as directed by the magnetron's shape. This randomness causes the magnetron to emit many frequencies. Furthermore, the random nature of the oscillation generation also causes the frequencies to be unstable and quickly jump around. A study of a typical household microwave oven conducted by Michal Soltysiak, Malgorzata Celuch, and Ulrich Erle, and published in IEEE's Microwave Symposium Digest, found that the oven's frequency spectrum contained several broad peaks that spanned from 2.40 to 2.50 GHz. Furthermore, they found that the location, shape, and even the number of broad peaks in the frequency spectrum depended on the orientation of the object that was in the oven being heated. In other words, the exact frequencies present in the electromagnetic waves that fill the oven depend on the details of the food itself. Clearly, the microwaves cannot be tuned in frequency to anything particular if the frequencies change every time you heat a different food. In applications where stable monochromaticity is important, such as in radar imaging, the magnetron therefore has limited utility. In applications where energy delivery is more important than monochromaticity, such as in a kitchen oven, the magnetron is ideal.

The plastic used in the production of utensils used in the microwave oven must possess the following properties.

It must be Heat-resistant.It must possess mechanical strength.

It must be able to bear the temperatures up to 235 degrees Fahrenheit for microwave ovens.

It must bear the temperatures up to 405 degrees Fahrenheit for dual-oven applications.The plastic must be sturdy.It must be rigid in shape.It must be able to support its contents before heating in the microwave.

It must be able to support its contents after heating.

Fillers, colorants, and plasticizers are used to add these characteristics in plastics for the use in microwaves.

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5°C will be the increase in temperature after 1 minute.

arihant physics neet page no 234 question no 2.(solution on backside)

series net resistance =10+20=30ohmnow such 12 pairshence 30/12=2.5ohm

We know energy stored in a capacitor isU=1/2CV^2------(1)On putting the value of C, we haveU=1/2(ε0A/x)V^2--------(2)Now rate of change of electrostatic energy will be given by-dU/dt=1/2ε0AV^2(−1/x2dx/dt)--------(3)So, from equation 3 we can see that-dU/dt ∝ x^−2

Note: D is taken as x here

total Charge stored = CV = 0.2*600 = 120C

now, P.D across 1.F = Q/C = 120/1 = 120 V

option B