Answer:
Explanation:
The Answer is Concave. Concave images make images smaller, they refract the light rays in many directions, causing the original image to shrink. This is why shortsighted people wear concave lenses. Convex lenses, the other type of diverging lenses, cause the image to be larger, because it concentrates the image in a specific point. That is how a magnifying glass works.
Answer:
783.2 N.m or Joules
Explanation:
Work done when a force F is applied to move an object by a displacement d meters
where cos(Ф) is the angle between applied force F and displacement d
Since the weightlifter is applying the force upward and the set of weight also move upward therefore, both are in same direction hence angle will be zero.
Now lets substitute the given values into the work equation:
since cos(0)=1
or
Since the unit of Force is Newton (N) and the unit of displacement is meters (m) therefore, unit of work done will be N.m
Note: 1 N.m is equivalent to 1 joule
The plants would wilt and decrease in height due to the lack of sunlight. I hope I helped!
Answer:
rotation and revolution
Explanation:
out of the four motions the earth is subject to which are: rotation about its axis, revolution around the Sun, processional motion (a slow conical movement
) of the axis, and the solar motion (this refers to the
movement of the whole solar system with space), only two are of any
importance to meteorology as this two causes changes in weather and seasons. The first motion is rotation. Earth rotates on its axis
once every 24 hours. One-half of the Earth’s surface is
therefore facing the Sun at all times. The second motion of Earth is its revolution around the Sun. The revolution around the Sun and the earth tilt on its axis are responsible for changes in seasons. The Earth
makes one complete revolution around the Sun in
approximately 365 1/4 days.
Distance traveled by him = circumference of that circular path = 2πr = 2π(3.5)
= 7π = 7×3.14 = 21.98 m
time = 8.9 s [ Given ]
Now, Average speed = distance / time
s = 21.98 / 8.9
s = 2.46 m/s
Hope this helps!
