Tea gets cool beacuse of heat tranfer through convenction
Heat transfers from a area of hot region to cold.
The tea is hot in this case, due to taht factor the heat will move towards teh cooler region which is coke and will make the coke warm
Hope this helped!
Answer:
kinetic and potential energy). The opposite is true when you remove thermal energy: Particles move slower (less kinetic energy). Particles get closer together (less potential energy)
Use Coulomb law: F = k * q1*q2 / (r^2), where k = 9.00 * 10^9 N.m^2/C^2
F = 9.00 * 10^9 N.m^2/C^2 * 2.4*10^-8 C * 1.8*10^-6 C / [0.008m]^2 = 38.88 * 10^ -5 N
F = 39 * 10 -5N
The applied force is parallel to the ground, so the net vertical force on the sled is 0. By Newton's second law, this means the normal force and weight of the sled cancel out:
<em>n</em> - <em>w</em> = 0
<em>n</em> = <em>w</em>
<em>n</em> = <em>m g</em>
<em>n</em> = (15.7 kg) (9.80 m/s²)
<em>n</em> = 153.86 N
(1) Answer:
6 Newtons
Explanation:
The net force is (mass) x (acceleration) = (3 kg) x (2.0 m/s^2) = 6 N
(2) Answer:
-98 Newtons
Explanation:
Weight (force due to gravity) is (mass) x (gravitational acceleration) = (10 kg) x (- 9.8 m/s^2) = -98 N
The negative sign due to negative acceleration indicates the gravitational force pointing in the negative direction within the defined coordinate system.
