Difference between "running up" and "walking up"?
A person runs up several flights of stairs and is exhausted when they get to the top. Later, when they have recovered, the same person walks up the same stairs and does not feel as tired. Why is this? Ignoring air resistance, does it take more...
How do we find the y intercept for this equation?
f(t)= -1+4sin(0.5π(t-1))
0=-1+4sin(0.5π(t-1))
1=4sin(0.5π(t-1))
How do I do the rest?
I know the y intercept is -5 but I'd like to know how you get there if you try to find it by hand.
Also, when I do assume mass=1kg,
Q=mcΔT = 1(800)(400)= 320 000 joules
(320 000 joules)/(0.03 J/kg per year)
=10 666 666.67kg per year.
Am I on the right track.
How do I get rid of the Kg sign?
By dividing it by something in kg? But how?
Trigonometric functions -->sine function EASY!
Homework Statement
Consider the trigonometric function f(t)=-1+4sin(0.5π(t-1)).
(a) What is the amplitude of f(t)?
(b) What is the period of f(t)?
(c) What are the maximum and minimum values attained by f(t)?
Homework Equations...
Q=mcΔT
0.03 =m(800)(400)
Are we trying to work out the mass here?
If so, after finding out the mass, how does this help us in enabling us to find the number years required for a chunk of thermally insulated granite to increase in temperature by 400°C?
Any help would be appreciated!
Does the attached diagram represent all the above information correctly?
If so, what do I need to do next?
The question mentions that the ball hits the opponent's ball while traveling at 4m/s.
Using momentum formula:
p=mv
=40g*4m/s
=160g m/s
Conservation of momentum:
mv (opponent's...
Radioactive decay of granite ---> How many years does it take?
Homework Statement
Radioactive decay of granite and other rocks in the Earth's interior provides sufficient energy to keep the interior molten, to heat lava and to provide warmth to hot springs. This is due to the average release...
Homework Statement
A competitive mini-golf player notices an opponent's ball situated 50cm in front of a wall containing two tunnels. One tunnel leads to the hole, the other to a bunker. The player skillfully putts their ball due East at the opponent's ball with a velocity of 4m/s. The...