A ball is dropped from 2.00 and rebounds to a height of 1.75m. What is the maximum height it will achieve after bouncing 7 more times?
In: Physics
berdine has developed cataracts in both eyes preventing her from being able to identify een her mothers face, berdine most clearly suffers a deficiency in A)perceotual set b)sensory adaptation c)bottom-up processing
In: Physics
A neon atom (m=20.0u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom travels away at a 40.0 ? angle from its original direction and the unknown atom travels away at a -50.0 ? angle.
Part A
What is the mass (in u) of the unknown atom? [Hint: You can use the law of sines.]
In: Physics
The average coefficient of volume expansion for carbon tetrachloride is 5.81 ? 10-4 (°C)-1. If a 40.5 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when the temperature rises to 33.5°C?
In: Physics
High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why, calculate the energy absorbed from a climber's body under the following conditions. The specific heat of ice is 2100 J/kg?C?, the latent heat of fusion is 333 kJ/kg, the specific heat of water is 4186 J/kg?C?.
A) Calculate the energy absorbed from a climber's body if he eats 0.45 kg of -15?C snow which his body warms to body temperature of 37?C. Express your answer to two significant figures and include the appropriate units.
B) Calculate the energy absorbed from a climber's body if he melts 0.45 kg of -15?C snow using a stove and drink the resulting 0.45 kg of water at 2?C, which his body has to warm to 37?C. Express your answer to two significant figures and include the appropriate units.
In: Physics
?V.I. Arnold Mathematical Methods of Classical Mechanics Second Edition Page 50?
Determine the major semi-axis of the ellipse which the center of the earth describes around the common center of mass of the earth and the moon. Where is this center of mass, inside the earth or outside? (The mass of the moon is 1/81 times the mass of the earth.)
NOT JUST 'INSIDE' OR 'OUTSIDE', with specific solution.
In: Physics
If the cross-sectional area of the manometer is 10 cm2 and the amount of water added is 50 ml, what will be the height difference between the two arms of the manometer?
In: Physics
How do the following types of radiation interact with matter?
a) radio waves
b) microwaves
c) infared
d) visible light
e) ultraviolet, x-rays and gamma rays
-
a) How do wavelength and frequency change as you move through the EMR spectrum?
b) What is special about the visible range of the EMR spectrum?
(Please type your responses and be succinct.)
In: Physics
Use the quantum particle wavefunctions for the kinetic energy
levels in a one
dimensional box to qualitatively demonstrate that the classical
probability distribution
(any value of x is equally allowed) is obtained for particles at
high temperatures.
In: Physics
A box of physics books slides down a ramp inclined at an angle of 40 degrees to the horizontal. The total length of the ramp is 10m. The coefficient of kinetic friction between the box and the ramp is .2 for the top 8m and zero for the bottom 2m. Upon reaching the bottom of the ramp, a spring bounces the box back upward.
(a) Find the distance that the box travels back up the ramp on the return bounce.
(b) Your answer shouldnt depend on the spring constant of the spring at the bottom. Why not?
In: Physics
In: Physics
1. Please answer the following questions.
?What is equipartition principle? Why is the latent heat of vaporization
for water so much larger than the latent heat of fusion?
?Describe the Gauss's Law. If our space is four dimensional, what will
you expect the r dependence of the coulomb's law?
In: Physics
Imagine you have two converging lenses. Lens A has a focal length of 12.5 cm. Lens B has a focal length of 50.0 cm. The diameter of each lens is 6.50 cm. Assume a near point of 25.0 cm.
a) How could you make a microscope with 4x magnification using these lenses?
b) How could you make a telescope with 4x magnification using these lenses?
c) Which of these is more practical? Why?
In: Physics
? Explain why entropy in an isolated system must reach its maximum. Biological system use energy (ultimately from the sun) in organizing highly ordered organisms, such as humans. Does this mean that biological system violate the second law of thermodynamics? Explain your answer. (5%)
In: Physics
In: Physics