Answer:
A, D, E
Explanation:
The force of Earth's gravitational pull is equal to the mass of the object times the acceleration due to gravity:
W = mg
The greater the mass, the greater the pull. A truck, bicycle, and camel all have greater mass than a baseball.
He arranged his periodic table by each elements atomic mass
Answer:
Mechanical advantage = 2.875
Explanation:
Given:
A diagram is shown below for the above scenario.
Length of ramp (Effort arm) = 4.6 m
Height of truck bed ( Resistance length) = 1.6 m
Mechanical advantage (MA) is the ratio of effort arm and resistance length.
So, mechanical advantage is given as,
Answer: The field lines bend away from the second positive charge
Explanation: opposite attracts, same repulse
Answer:
Therefore the the highest frequency is 620Hz and lowest frequency is 580Hz
Explanation:
Given data
Source Frequency fs=600Hz
Length r=1.0m
RPM=100 rpm
The speed of the generator is calculated as:
Substitute the given values
For approaching generator the frequency is calculated as:
On the other hand,for the receding generator,Doppler's effect is expressed as:
Therefore the the highest frequency is 620Hz and lowest frequency is 580Hz