Answer:
The answer is below
Explanation:
The length of the rope is equal to the radius of the circle formed by the complete rotation of the rope. Therefore the radius = 1.50 m.
a) The distance covered by the rope when completing one rotation is the same as the perimeter of the circle. Hence:
Distance covered in one rotation = 2π * radius = 2π * 1.5 = 3π meters
The velocity of the ball = Distance / time = 3π meters / 3.4 seconds = 2.77 m/s
b) The initial velocity (u) is 0 m/s, the final velocity is 2.77 m/s during time (t) = 3.4 s. Hence acceleration (a):
v = u + at
2.77 = 3.4a
a = 0.82 m/s²
c) Force on ball = mass * acceleration = 4 * 0.82 = 3.28 N
Answer:
Blue is hot while the red is cool.
Explanation:
Hot stars appear in blue whereas cooler stars appear to have red hues.
Hi there!
We can use the following equation for a point charge in a magnetic field:
= Force due to magnetic field (7.6 × 10⁻¹³N)
= Charge of particle (1.6 × 10⁻¹⁹ C)
= velocity of particle (6.6 × 10⁶ m/s)
= Magnetic field strength (1.8 T)
Or, without the cross product:
θ = angle between particle's velocity and field
We can rearrange to solve for theta:
Solve for theta:
Answer:
The number of digits used to express a measured or calculated quantity. By using significant figures, we can show how precise a number is
Explanation:
