Physics Homework Help

• Physics
The magnification of a thin lens can be represented by the formula M = -di/do = f/(f - do) where f is the focal length, di is the distance from the image to the lens, and do is the distance from...

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• Physics
The two equal tensions are the on a particular crooked teeth acting at (180-2*14degree) = 152 degree. Therefore the resultant force = sqrt(18.5^2+18.5^2+2*18.5cos152 degree)...

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• Physics
It will not be hard. The hard part of hard work has nothing to do with the work. The work will start with reading the question, and then doodling. Draw a picture of what’s going on, and label...

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• Physics
The force of attraction between the two charges Q1 and Q2 separated by a distance r is given by: F = (1/4pe0) Q1*Q2/r^2 N = 8.98755*10^9* Q1*Q2/r^2. The force is of attraction if both chages are...

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• Physics
The forces acting on the object of mas m on an inclined plane are : mgcos (90-35) or mgsin35 along the surface down..........(1) Normal force = mg*sin(90-35) +F....................(2) Frictional...

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• Physics
i) Generally we treat mass as constant. Mass is the amount of matter that is contained in an object. By the 2nd law of motion Newton gave us the definitionof force , F =ma or mass is the force...

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• Physics
We know that the force F between the two charges q1and q2 separated by a distance d is given by: F = [1/(4pi*e0)]*(q1*q2/d^2). Please do not get confused with the notation, as we use this as a...

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• Physics
Let the resultanrt temperature if the mix be t deg C. Then the heat lost by m1 gram of steam to come down to t de temp = L*m1+(100-t)s, where L = latent heat of vapourisation /gram = 2268KJ/1000...

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• Physics
By common sense the it is 10N - 4N = 6N. When two forces F1 and F2 acts on an object , resultant force is equal in gnitude{(F1)^2+(F2)^2+2F1*F2 cosx}^(1/2), where x is the angle between the forces...

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• Physics
A black hole is called a singularity and is produced when massive matter collapses in on itself under the pull of it's own gravitational attraction. If massive enough, the matter's gravitational...

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• Physics
The formula for finding the amount of pressure exerted is simply F = P*A In this formula, P is pressure, F is force and A is area. So you can just plug in the numbers that you already have here. F...

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• Physics
The pressure would be doubled if the same force acted on half the area. The pressure in the first scenario is 50 N/m^2 while the pressure in the second scenario is 100 N/m^2 The way you get this is...

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• Physics
The force per unit area of atmospheric pressure = 10^5 Pa. The force per unit area of meths of density 800 kg/m^3 of one meter height column = 800kg/m^3*1m*9.81m/sec^2 = 7848 N/m^2 =7848 pa...

Asked by syedajmain on via web

• Physics
The formula for finding this anwer is as follows: Force of gravity = (G*m1*m2)/r^2 In this formula, G stands for the universal gravitational constant, m1 is the mass of one object (should be...

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• Physics
To solve the problem given in the question we need to know the densities of the both the liquids, which have not been specified. Another problem is that while it is clear that one of the liquid is...

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• Physics
For the first problem, recall that work is force times distance: W=F*r In this case, the force is the force of friction, and can be calculated as the coefficient of friction times the mass times...

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• Physics
The relative density of any liquid or any other substance is given by the formula: Relative Density= (Mass of a given volume of the substance)/(Mass of a equal volume of water) From the data given...

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• Physics
To solve this problem we need to know densities of lead and petrol. This information is not provided in the question therefor we will use the data available from other sources. Thus we know:...

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• Physics
The equation of tangential velocity of an orbitting around the pplanet(here earth) is given by: v^2 = GM/R or V = sqrt (GM/R), where G = universal gravitational constant, v is the tangential speed...

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• Physics
Given: Mass of comet = m = 7.85*(10^11) kg Velocity of comet = v = 25 km/s = 25000 m/s Energy released by largest nuclear weapon = E' = 4.2*10^15 J a) Kinetic energy of comet The kinetic energy of...

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• Physics
We represent the forces,12N and 5N acting at apoint O, as adjascent sides of a parallelogram. Then the resultant force is represented by the diagonal of the parallelogram from the point of acting...

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• Physics
Most of the time, people ask this question with the idea of a Newtonian "feather vs. bowling ball" concept in mind. Based on those terms, the typical answer is correct: two objects will fall at the...

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• Physics
A barometer is used to measure the atmspheric pressure of place. An altimeter shows the altitude of a place. The atmospheric pressure decreases as the altitude increase. So it is a known fact that...

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• Physics
Mercury barometer uses the height of the mercury column in a vacuum tube inverted on bowl filled with mercury,to show the atmospheric pressure .The height of the mecury column rises up or comes...

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• Physics
The forces acting on the bar are (i) 6N at 1meter from P, (ii0 an upward force x acting at O, i.e, at (1+2) =3 meter from P upwards, and (iii) a force F down ward , at a distance, (1+2+3)=6...

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• Physics
We suppose that the plank XY is resting on the trestles at A and B which are 3 meters apart. Further the mass of the plank plank m is not given. The total length of the plank L is also not...

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• Physics
Sound waves are due to the mechanical vibrations created by an object. Example a tuning fork or the cone of a speker. Sound waves requires a media, either air or a material solid or liquid. Sound...

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• Physics
I assume that you are talking about shooting a bullet from the Earth and having it become a satellite of the moon. I do not know if it would be possible, but here are some thoughts: It's easy...

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• Physics
Though we know that we are sucking water, it is actually the atmospheric pressure that does the job. If you go to a zero atmosheric pressure area, it is not possible to raise water in this...

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• Physics
Mercury is more dense. Its relative density is 13.534 times that of water. So, to measure the atmospheric pressure, which is 760 mm of mercury you need a barometer ,with mercury, of length slightly...

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• Physics
The height of mercury above the bowl in a barometer is a measure of the pressure of air pushing on the mercury in the bowl. The mass of the mercury above the bowl times the force of gravity is...

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• Physics
At sea level, the approximate value of atmospheric pressure in those units of measure is as follows: 101.3 kPa which is how it is usually expressed. In pascals, it is 101325 pascals. The first of...

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• Physics
The formula for pressure is P = F/A In this equation, P stands for pressure while F stands for force and A stands for area. Pressure is typically measured in a unit called the Pascal. So what this...

• Physics
The area of the base is 4m*3m = 12m^2. The volume of the paraffin = volume of the tank = length *breadth *depth = 4*3*2 = 24m^3. Therefore, the mass of the paraffin = volume of paraffin*its density...

Asked by arman7763 on via web

• Physics
This is because of the amount of force that is put on your foot and the area over which the force is applied. Since pressure = force/area, the same force on a smaller area means more pressure....

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• Physics
Are you just asking what the meaning of the abbreviation Pa is? Pa is the abbreviation for the unit of measure known as the Pascal. This unit of measure is named after the French mathematician and...

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• Physics
The work done is the product of the applied force and the diplacement times the cosine of the angle of application of force with the direction of displacement. Or W = F*r*cosine theta. Substituting...

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• Physics
In order to find the answer to this question, you need to know the following equation: m = dv Where m is mass, d is density, and v is volume. In this case, you are looking for mass, you have...

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• Physics
The density bottle is used to find the density of the liquid, where you need to fill up the density bottle with a specific loquid and put its stopper or lid in a firm fixed postion.Any extra liquid...

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• Physics
Off the top of my head, the water displacement method might be the best way to measure the density of this object. In this method, the ability of the object to float or sink is of critical...

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• Physics
In order to answer this question, you must know the density of petrol. The reason you need to know this is because the formula that you would need to use to find the volume of petrol is M = DV...

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• Physics
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• Physics
In the situation described in the problem a considerable amount of kinetic energy of the bullet emerging out of the gun will be used up for the bullet to get embedded in the block of wood. In all...

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• Physics
In practical terms measuring the density of a liquid has been accomplished easily by use of a hydrometer. Early brewers needed to know the ratio of water with sugars vrs alcohol and the amount of...

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• Physics
Imagine your drawing pin magnified looks like a cone. The tip of the pin is identified with the top tiop of the cone.The head of the pin is identified with the base of the cone. and a fallen down...

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• Physics
If C is the touching point of the cone with the ground and G is the centre of gravity of the cone, then for a slight tilt , the point G raises up but still the perpendicular drawn from the G pass...

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• Physics
Kepler's laws of planetry motion describe the orbit of two bodies when the mass of one is negligible compared to the other,such as a planet and its star. First law: symbolically: Symbolically: The...

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• Physics
To give the passengers a sensation of three times the normal body weight the roller coaster speed along the circular path of vertical dip of roller coaster must must create a centrifugal...

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• Physics
Given: Mass of car = m = 1400 kg Speed of car = v = 25 m/s Radius of hill = r = 210 m we know acceleration due to gravity = g = 9.81 m/s^2 Solution: When the car is at the crest of the hill and...

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• Physics
The velocity v of the satellite is given by the formula: v ={(GM)/R}^(1/2), where G is the gravitational constant, M is the mass of the moon and R is the distance between the satellite and the...

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