Answer:
Answers 2.( a) . (i)Total potential difference provided by the four cell = 4x 1.5 Volts = 6.0 Volts (ii)The component of X is a variable resistor .
Explanation:
hope it helps
A. gravity is your answer hope this helps
Answer:
900.48925 Hz
979.9785 Hz
Explanation:
= Relative velocity of ambulance =
= Velocity of wall = 0
v = Velocity of sound in air = 343 m/s
From doppler effect we have
The frequency of sound is 900.48925 Hz
When the wall acts like a source
The frequency of sound is 979.9785 Hz
Answer:
5.25%
Explanation:
From the question given above, the following data were obtained:
Accepted value = 238857 miles
Measured value = 226316 miles
Percentage error =.?
Next, we shall determine the absolute error. This can be obtained as follow:
Accepted value = 238857 miles
Measured value = 226316 miles
Absolute Error =?
Absolute Error = |Measured – Accepted|
Absolute Error = |226316 – 238857|
Absolute Error = 12541
Finally, we shall determine the percentage error. This can be obtained as follow:
Accepted value = 238857 miles
Absolute Error = 12541
Percentage error =.?
Percentage error = absolute error / accepted value × 100
Percentage error
= 12541 / 238857 × 100
= 1254100 / 238857
= 5.25%
Therefore, the percentage error is 5.25%.
Answer:
Energy
Explanation:
The unit is 
.
We can see the formula of kinetic energy is
Where 
is the mass and 
is the velocity of the object.
Which means its unit would be kg times square of meter per second, that is . Which is often referred as Joule.
Also, when look at the formula of work done by an object.
Where 
is the force and 
is the distance traveled by the object due to force .
We an see that its unit is kg meter per second squared times meter. That is equivalent to . This is also a type of energy.
So, the unit is the unit of energy.
