Explanation: Each state of matter behaves differently and the particles in each state behave differently. This diagram compares the particles in a gas, a liquid and a solid.
can be answered using momentum.
momentum = p
p1= mass1 * velocity1
p1 = p2
therefore
p1 = 6kg * 4m/s
p1 = 24kgm/s
p2=m2 * v2
24 kgm/s = 7kg * v2
v2 = 24 kgm/s / 7kg
v2= 3.42 m/s
Answer:
reaches a higher temperature is LEAD.
Explanation:
In this exercise we have a calorimeter problem, in which the initial energy is absorbed by each body
E₀ = m c_e ΔT
where E₀ = 5000 J
ΔT =
the specific heats for each material are tabulated
material c_e (J / kg ºC)
glass 837
copper 387
lead 128
gold 129
As they indicate that the mass of the materials is the same, the one with the greatest temperature difference is the one with the least specific heat, consequently the one that reaches a higher temperature is LEAD.
let's calculate for a mass of 1 kg
glass
ΔT = 5000/(1 837)
ΔT = 6ºC
Lead
ΔT = 5000/(1 128)
ΔT = 39.1º
GOLD
ΔT = 5000/(1 129)
ΔT = 38.8º C
Answer:
Uniform acceleration means that the object is accelerating at a constant rate. Since there is still acceleration, velocity is not constant. In fact, the velocity is increasing. This means that the object is moving faster and faster at a constant rate.
This graph is a displacement-time graph so its gradient would represent the velocity of the object. The velocity increases hence the gradient should increase (which means that the graph must be steeper and steeper with increasing time).
Constant gradient of a displacement-time graph would mean that there is no acceleration since gradient of the graph does not change so velocity is constant.
Note that it is the<em> </em><em>rate</em><em> </em><em>of</em><em> </em><em>change</em> of velocity that is constant during uniform acceleration, not velocity.