Answer:
Ozone creation occurs more than its loss
The net weight of the balloon must be zero.
The forces acting on the hot-air balloon when it hovers at a fixed altitude are gravitational force and the upthrust of the hot air. As the balloon is at a fixed altitude, the two forces balance each other resulting in zero net force. Thus, the weight of the balloon is balanced by the upthrust, so the balloon is weightless at this time of the flight.
Answer:Yes
Explanation:
Given
Using Hooke's law value of spring constant is
so the range of k varies from
i.e. from 8-0.6 to 8+0.6=7.4 to 8.6 N/m
From SHM experiment
Spring constant obtained are
range
range=8.9-0.5 to 8.9+0.5
range=8.4 to 9.4 N/m
as both range is coinciding at some Point therefore it can be consider that the spring is same
Answer: 26.7 s
Explanation:
Given
Width of the river, = 0.2 km = 200 m
Speed of the rover, = 3 m/s
Speed of the boat, = 8 m/s
From the question, the boat would have to move westward. In moving westward, the angle will be
tan A = 3/8
tan A = 0.375
A = tan^-1(0.375)
A = 21°
Then, the velocity of the boat northward will be
v(north) = 8 cos 21
v(north) = 8 * 0.934
v(north) = 7.47 m/s
Therefore, the time taken would be
t = 200/7.47
t = 26.7 s
Answer:
One degree unit on the Celcius scale is equivalent to one degree unit on the kelvin scale. The only difference between these two scales is the zero point. The zero point on the Celcius scale was defined as the freezing point of water, which means that there are higher and lower temperatures around it.