Answer:
Convex or converging lens.
Because they help to magnify the image or increase the size of the image you are viewing when light is reflected on it or to make the quality of the image clearer to view.
Explanation:
They both make use of Convex or converging lens.
Both lenses are very important because they help to magnify the image or increase the size of the image you are viewing when light is reflected on it or to make the quality of the image clearer to view.
During the roller coasters ride through the top of the hill, it begins to gain PE through a machine. It then will beginning ride down the hill causing the gaining of speed. Furthermore, the roller coaster began to gain KE, although it will lose its PE due to losing its height. Kinetic Theory states that the higher the molecules vibrates the higher the temperature, specifically the higher the speed of the roller coaster, the higher the temperature of its wheels cause from friction! Hope this helps
You can calculate the speed of the ball by the distance it travels divided by the time.
Length of string = 2m
Circumference of circle = 2*radius*π = 4*pi = ~12.6 meters
Speed = distance/time = 12.6m/2s = 6.28m/s
Acceleration = V²/R where the velocity at any one point is the same as the speed.
acceleration = (6.28)²/2 = ~19.72m/s²
Answer:
82.8 J
Explanation:
The work done to raise the crate is ...
PE = Mgh = (3 kg)(9.8 m/s^2)(2 m) = 58.8 J
The kinetic energy added to send the box flying is ...
KE = (1/2)Mv^2 = (1/2)(3 kg)(4 m/s)^2 = 24 J
So, the total work involved in this activity is ...
58.8 J +24 J = 82.8 J
Answer:
The distance is 19.58 m.
Explanation:
Given that,
Mass = 3.0 kg
Radius = 1.3 m
Angular speed = 6.8 rad/s
Angle = 24°
Acceleration of gravity = 9.81 m/s²
We need to calculate the distance
Using formula of kinetic energy
Total Initial kinetic energy,
....(I)
Now, Total potential energy
....(II)
Equating equation (I) and (II)
Hence, The distance is 19.58 m.