Answer:
T'=92.70°C
Explanation:
To find the temperature of the gas you use the equation for ideal gases:
V: volume = 3000cm^3 = 3L
P: pressure = 1250mmHg; 1 mmHg = 0.001315 atm
n: number of moles
R: ideal gas constant = 0.082 atm.L/mol.K
T: temperature = 27°C = 300.15K
For the given values you firs calculate the number n of moles:
this values of moles must conserve when the other parameter change. Hence, you have V'=2L and P'=3atm. The new temperature is given by:
hence, T'=92.70°C
Answer:
306.4J
Explanation:
Given parameters:
Displacement = 50m
Force = 80N
Angle = 40°
Unknown:
Work done = ?
Solution:
Work done is the force applied to move a body through a certain distance.
Work done = Force x displacement cos Ф
Work done = 8 x 50 cos 40 = 306.4J
The baseball one because it shows that the ball "soars" (accelerates) due to the force applied F=ma
Answer:
0.061 J
Explanation:
The kinetic energy of an object is given by
where
m is the mass of the object
v is its speed
For the toy truck in the problem, we have
m = 0.1 kg is its mass
v = 1.1 m/s is its speed
Putting the numbers into the equation, we find
Answer : Resistance is 16 ohms.
Explanation :
It is given that,
Power of toaster,
Voltage,
According to ohm's law, V = I R
Mathematically power is defined as :
or
So, the resistance of the toaster is 16 ohms.
Hence, this is the required solution.