A person stands on the surface of the Earth. The mass of the person is m and the mass of the Earth is M. The person jumps upward, reaching a maximum height h above the Earth. When the person is at thi
Interactions between physical things are generally not one-way, so I expect light to have some effect on gravity.-Yes light affects gravity. Gravity is nothing more then a effect of the curvature of s
Full Question:
A dolphin located in sea water at a temperature of 21 degrees Celsius emits a sound directed toward the bottom of the ocean 158 m below. How much time passes before it hears an echo?
I am 16 years of age and I am from Malaysia.Last Friday, I just received my Physics result and unfortunately, I did not manage to get an A+ in my mid-term examination.I just got a B+ and I am so frust
A steel bar (2 meters) and an aluminium bar (1.99 meters) have the same temperature (0 ºC). If they are heated until they have the same length, what should be the temperature for that to happen?
- coe
hi,
what is the best flyback driver circuit?
best being - simplest, most efficient, highest output voltage, highest output current.
thx Alf.-How do you expect to get an answer for this? There are h
I cant get this question!
The drawing shows a rectangular block ofglass (n=1.52) surrounded by liquid carbon disulfide (n=1.63). A ray of light is incident on the glass at point A with an angle of 36
A projectile is launched with speed v0 and angle (theta). Derive an expression for the projectiles maximum height, h
thanks for your help!-Hmax = Vy²/2g (constant acceleration with time eliminated)
full question: A helicopter rotor blade can be considered a long thin rod. Part A: If each of the three rotor helicopter blades is 3.65 m long and has a mass of 110 kg, calculate the moment of inertia
I have a triple science exam and im a little worried.
I need help on these topics:
1. An electric motor
2. Transformers
3. Satellites
4. Lenses and Mirrors
If you could help me with these topics, I w
Im doing a gcse phyics past paper and im stuck on this question.
When the potential difference between the student and a nearby earthed metal dome
reached 15 kV, a spark jumped between the student a
I need to know how to calculate the initial velocity.
I have the velocity in the x direction and the y direction.-UR question sounds suspiciously like:
how do I find the total velocity when I have its
Astatine 211 = 7.2 hours (Half Life).
Q. The radiation from At-211 is undetectable after 36h. Calculate the fraction of the initail activity remaining after this time.
The answer is 1/32. But How? T
Im not asking for whos wrong or whos right, Im just hoping to get a comparison :) Please tell me the difference, I dont mind lots of detail, in fact its appreciated :)-The differences mainly result fr
In being positioned on a milling machine table, a device is given the following displacements: 5.0 cm at 0degrees, 12.0 cm at 80 degrees, 7.0 at 110 degrees, 9.0 at 210 degrees. Find the magnitude and
