Explanation:
Make a table, listing the x and y coordinates of each square's center of gravity and its mass. Multiply the coordinates by the mass, add the results for each x and y, then divide by the total mass.
The x-coordinate of the center of gravity is 15/14 a.
The y-coordinate of the center of gravity is 47/42 a.
Answer:
15 gallons.
Gallons = (Pounds) ÷ (Pounds ÷ Gallons)
Explanation:
Answer:
Box 1 has more mass than box 2.
Explanation:
Box 1 has more mass than box 2, as it caused a greater affect in the change of speed of box 2. During a collision, the object with a lesser mass will be affected more, causing the velocity to change more. Because box one is greater than box 2, it caused a larger change in speed when they collided.
Answer: 1.62m/s^2
Explanation: Using V^2=U^2+2a*s
V=9.2m/s, U=0, d = 26.2m
V^2=2a*s
a = V^2/2s
a = 9.2^2/2*26.2
a = 1.62m/s^2
Answer:
By conservation of momentum
Explanation:
By conservation of energy, the photon needs at least the same amount of energy as the energy rest mass of the electron and positron together, which is around 1,02 MeV. But, by conservation of momentum, the electron-positron do not have momentum, while the photon had some. This means that, in order to conserve momentum, we need another neighboring particle, normally an atomic nucleus, to receive the photon's momentum.
