Homework Statement
cos(x)^2/(1+3sin(x)-4sin(x)^2)=(1+sin(x))/(1+4sin(x))Homework Equations
We are taking a topic in math where you rearrange one side of the formula to match the otherThe Attempt at a Solution
I have factor 1+3sin(x)-4sin(x)^2 to get (-sin(x)+1)(4sin(x)+1)
Homework Statement
The hard drives of many desktop computers spin at a maximum rate of 7200 rpm. If the diameter of the spinning disk in the harddrive is 3.51 cm, calculate the magnitude of the centripetal acceleration on the outside radius of the disk.
Homework Equations
ac=v2/r...
Homework Statement
A 2.00kg mass starts from rest and slides down a frictionless inclined plane that makes an angle of 30 degrees with the horizontal. Determine its speed after it has slid a distance of 3.00m down the ramp.
Homework Equations
I am leaning about Laws of Conservation of...
Homework Statement
A 100kg sign is suspended by two wires with angles of 35˚ and 55˚ (to the roof) and meet at a 90˚ angle at the sign. Determine the tension in each wire.
(I'm not sure if I described very well. It was on a diagram)
Homework Equations
Fg=mg
aˆ2+bˆ2=cˆ2...
Homework Statement
The U-2 was an American spy plane capable of flying up to 21 km high at speeds over 600km/h. Determine the time required for the missile to reach its maximum altitude of the U-2.
Homework Equations
d=v_i t+1/2 at^2
The Attempt at a Solution
d=21000m
a=-9.81m/s^2
v_i=0
t=...