John likes to drink tea (specific heat capacity for tea is 4100 J/kg°C). He makes himself a nice cup of tea with a volume of around 100 mL. He wants to drink his tea, but it is too far hot (99°C). How
A 2 kg ball is thrown from the top of the 60 m high building with initial velocity 40 m=s at an angle of
60 deg. Find:
a) The time it takes the ball to reach the ground.
b) the distance (horizontal)
A sports car accelerates from rest to 95 km/h (Kilometers per hour) in 4.0 seconds.
The whole thing with converting the acceleration into m/s^2 (meters per second squared) is really screwing me up. C
the combustion phase?
My Physics teacher never showed us how to work out problems like this. He told us that the answer is 2000 W, but he wants a solution. Any explanation or steps to solving the pro
The switch in the circuit shown in the diagram is closed after being open for a very long time, during which the capacitor has lost all of its charge.
http://twitpic.com/4s1lcp
For each statement se
What would be some useful formulas for the following algebra based Physics topics:
- Kinematics on 1 Dimension
- Kinematics in 2 Dimensions, Vectors
- Newtons laws of Motion
- Circular motion, Gravita
Why does escape velocity increase as you compress say earth, while keeping the mass same?
Is it due to energy created by pressure?-It actually doesnt matter what Earths radius is in the question, onl
How is it defined in terms of where the gravity is located?
Is it just arbitrary to say its located at its center according to Newtonian physics?
How does it change with Einsteins general relativity
A block rests on a rough incline and has coefficients of friction μk= 0.20 and μs= 0.30. If the incline angle increases, at what angle does the block start moving? ans: 16.7
I tried to write down all
In terms of Newtons three laws of motion, how do the following safety features work?
- Cruise control
- Pre-crash systems using radar and laser sensors
They warn the driver, precharge the brakes, infl
A 27.0 kg wheel, essentially a thin hoop with radius 1.80 m, is rotating at 270 rev/min. It must be brought to a stop in 22.0 s. (a) How much work must be done to stop it? (b) What is the required ave
A uniform spherical shell of mass M = 15.0 kg and radius R = 0.900 m can rotate about a vertical axis on frictionless bearings (Fig. 10-44). A massless cord passes around the equator of the shell, ove
when isoptopes of chemical element are projected in a magnetic field at right angle,then marnetic force,
Fb=evBsin90=evB
Provide centripetal force, Fc=mv2/r
Bev=mv2/r
r=mv/Be
Isotopes have same charge
a stone of mass 10gms falls from a height of 5 feet under gravitational force...the same stone is made to fall from 500 feet...according to the formula of force..F=mg....the force remains constant in
10.) The stored chemical energy in a 120 g frozen beef and bean burrito is about 350 Cal = 350 kcal. If all of that energy was converted to gravitational potential energy, how high would you have to l
