Answer:
Explanation:
Given
Speed of block at bottom is 
Distance traveled 
initial velocity is zero
using equation of motion

where v=final velocity
u=initial velocity
a=acceleration
s=displacement


when it is 3 m from top then


Answer:
Explanation:
From the given information:
The speed of a synchronous motor in relation to its frequency can be represented with the formula:

where,
the electrical frequency
is measured in Hz
the number of poles = P
For us to estimate the number of poles to have 50 Hz - 60 Hz Power, then we need to relate the frequencies of the above equation.
i.e

Thus, we can conclude that 10 poles synchronous motor is attached with 12 poles synchronous generator in order to convert 50 Hz to 60 Hz power.
If it is a headwind it means it's travelling against the motion of the plane. This means it's velocity is simply v=720-16=704 km/h due east.
Answer:
Displacement
General Formulas and Concepts:
<u>Kinematics</u>
- Displacement vs Total Distance
Explanation:
Displacement is the difference between the start position and end position.
Total Distance is the entire distance <em>traveled</em> between the start and end position.
Topic: AP Physics 1 Algebra-Based
Unit: Kinematics
Answer:
C
Explanation:
Radiation affects both cancer cells and healthy cells, but it affects cancer cells more.