Answer:
Substance X has the highest temperature because its particles have more kinetic energy.
Explanation:
The temperature of a substance is directly proportional to the average kinetic energy of its particles, according to the equation:
where
is the average kinetic energy of the particles
k is the Boltzmann's constant
T is the absolute temperature of the substance
In this problem, we see that the particles in the two substances have same mass, but particles of substance X travel faster than particles of substance Y, and since the average kinetic energy depends on the square of the speed of hte particles:
we can conclude that particles in substance X have more kinetic energy than particles in substance Y, therefore substance X has higher temperature than substance Y.
When the two powerboats are about to cross paths, the right boat on the starboard must maintain a constant speed of the course and act patiently.
Also, the captain of the boat must make sure that he is alert and attentive while driving so that no mishappening takes place.
Answer: momentum has the same direction as that of velocity but when 2 bodies with the same linear momentum & different velocities it has different masses because a vector quantity is represented by a cross product of mass and velocity of object .
Answer:
Explanation:
given,
Average velocity due west = 1.20 m/s
case 1
Distance moved in west, x₁ = 5.63 km
speed due west, v₁ = 2.33 m/s
Case 2
Distance moved in east = x₂
speed due east, v₂ = 0.374 m/s
total distance = x₁ + x₂ = 5.62
total time = t₁ + t₂ = 5630/2.33 + x₂/0.374
now,
negative sign is used because we want the distance in east but velocity is in west.
The distance she walked in east is equal to 648.46 m