Answer:
I'm not sure, its either 1 or 2
Explanation:
Water melts ice because it is at a higher temperature than the ice, so heat energy is transferred from the water to the ice. Since the scientific principle at work here is the idea of heat transfer, it is not necessary that water be used to melt ice.
Answer:
v = 87.5 km/h
Explanation:
To find the speed of the car you use the following formula:
(1)
x: distance traveled by the car = 350km
t: time = 4h
you replace the values of x and t in the equation (1):

hence, the speed of the car is 87.5km/h
It’s supposed to be gamma, what are your other options
Answer:
250s
Explanation:
Given parameters:
Mass = 50kg
Speed = 10m/s
Force = 2N
Unknown:
Time the force was acting = ?
Solution:
To solve this problem, we use the equation of motion from the second law of Newton:
Ft = mV
F is the force
t is the time taken
m is the mass
V is the velocity
2 x t = 50 x 10
t = 250s
Mass of the milkyway galaxy :

The magnitude of the mass of the Milky Way galaxy = 
<h3>Can galaxies recycle stars?</h3>
Galaxies do not appear to have sufficient matter inside them to keep shaping modern stars at the rates that they do. Presently, astronomers have caught a universe within the act of reusing fabric that it already tossed out, which may clarify the discrepancy. New perceptions give the primary coordinate evidence of gas streaming into distant galaxies that are effectively making infant stars, offering support for the "galactic recycling" theory.
To learn more about galactic recycling, visit;
brainly.com/question/6272572
#SPJ4