After equal masses absorb equal amounts of heat, the substance
with the greatest 'specific heat capacity' will have the smallest change
in temperature.
The specific heat capacities of those substances are ...
Water . . . . . 4,181 joules per kilogram-°C
Lead . . . . . . . . 125.6
Iron . . . . . . . . . 460.5
Basalt . . . . . . . . . 0.84
It looks like water is the easy winner.
THAT's why, in the days before electric blankets, hot-water bottles
were used to warm up a cold bed ... not hot-iron bottles or hot-basalt
bottles. A pound of hot water brings much more heat to the sheets
than a pound of any of those others.
Answer:
The EM radiation most immediately lower-frequency than visible light is called infrared, and the EM radiation most immediately higher-frequency is called ultraviolet.
The ball rolls to a rest from 4.0 m/s in a span of 23.3 s - 10.0 s = 13.3 s, so the average acceleration is
(0 - 4.0 m/s) / (13.3 s) ≈ -0.30 m/s²
Answer:
a= - 1.2 m/s²
Direction of a : in the negative x- direction
Explanation:
Because the ball moves with uniformly accelerated movement we apply the following formula:
vf²=v₀²+2*a*d Formula (1)
Where:
d:displacement in meters (m)
v₀: initial velocity in m/s
vf: final velocity in m/s
a: acceleration in m/s²
Known data
v₀ = 9.0 m/s
vf= 3.00 m/s
d = 30.0 m.
Problem development
We replace data in the formula (1) to calculate acceleration :
vf²=v₀²+2*a*d
(3)²= (9)² + (2* 30)*a
9=81+(60)*a
9-81=(60)*a
-72= (60)*a
a= -72/60
a= - 1.2 m/s²
Direction of a : in the negative x- direction
Density because it can measured and felt.