both.
another method i found online was to do (12000grams)*1cal/(g*K)*25 = 300,000 calories which is close to my first result. also i wasnt sure if the answer should be in joules or calories.
Homework Statement
What amount of energy is required to raise the temperature of 12.0 kg of water
from 0 degrees Celsius to 25 degrees Celsius?
Homework Equations
Q = m*c*ΔT
1 calorie = 4.186J
specific heat capacity for water = 4.19x10^3
The Attempt at a Solution
Q = m*c*ΔT =...
Homework Statement
What volume of water must a ship that masses 2.00x10^5 kg displace to float?
Homework Equations
density = mass/volume
density of water = 1.00x10^3
The Attempt at a Solution
200,000/1000 = 200 m^3
im guessing that in order to float you must displace your own...
Homework Statement
Standing sound waves are produced in a pipe that is 1.40 m long. For the
fundamental frequency and the first two overtones, determine the locations along the
pipe (measured from the left end) of the displacement nodes if the pipe is open at both
ends.
Homework...
im still off.
I_i = 2.16
I_f = M(R^2) = .5 + .4 = .9 i used thin walled hollow cylinder
2.16*2.5= 5.42
5.42 = .9ω_f
ω_f = 6.02rad/s
did i do something wrong? am i suppose to use thin walled hollow sphere? it gets me 7.39
Homework Statement
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center. When the skater's hand and arms are brought in and wrapped around his body to execute the spin, the hands and arms can be...
Homework Statement
a large stone obelisk that is 8meters tall is laid down flat in the center of a Roman piazza and is going to be tilted into place by a rope and pulley system tied to a team of donkeys. If the team of donkeys always pulls with a constant force of 4500N, what is the torque if...