Answer:
b
Explanation:
it melts yes but it's still water [same element] so there fore it's a physical change
Answer:
Acceleration a ≤ 3 m/s^2
the greatest acceleration that the truck can have without losing its load is 3 m/s^2
Explanation:
For the truck to accelerate without losing its load.
Acceleration force of truck must be less than or equal to the maximum friction force between the truck bed and the load.
Fa ≤ F(friction)
But;
Fa = mass × acceleration
Fa = ma
ma ≤ F(friction)
a ≤ (F(friction))/m ......1
Given;
Fa = mass × acceleration
Fa = ma
mass m = 800 kg
F(friction) = 2400 N
Substituting the given values into equation 1;
a ≤ F(friction)/m
a ≤ 2400N/800kg
a ≤ 3 m/s^2
the greatest acceleration that the truck can have without losing its load is 3 m/s^2
Well, it goes 60 miles in one hour......so set up a ratio.....
60 miles/5 miles = 1 hr/x.....you'll get 60x = 5....then 5/60 would be 0.083
Answer:
the answer is 3600 kilometers
The position of an oscillating mass is given by:

where A is the amplitude of the oscillation,
the angular frequency and t the time.
The velocity of the oscillating mass can be found by calculating the derivative of the position:

In this problem, A=2.0 cm and
, so if we substitute these data and t=0.4 s we can find the velocity at t=0.4 s:
