Answer:
Step-by-step explanation:
Power is defined by work over time. In physics, work can be defined as the energy transferred over from an applied force over some distance. As a formula:
, where F = force applied and d = distance that force is applied over.
*It is worth noting that F must be parallel to the distance travelled. If it is perpendicular, no work is done, and if it is at an angle, find the parallel component and use that for F.
In this case, the force applied must counter the force of gravity on Martha, which is given by 
, where m = Martha's mass and g = gravitational constant 9.8 m/s/s. Therefore, 
. Since she raises her body 4.0 meters, the work done must be 
.
Since power is equal to work over time and t = 2.3 seconds, we have:
(to two significant figures)
Answer:
(Thermometer B reading - Thermometer A reading)
Step-by-step explanation:
The thermometer reading aren't given in the question.
However, hypothetically.
The difference between two temperature values (morning and evening values) would be :
Temperature in the evening - morning temperature
Therefore,
If ;
Thermometer A reading = morning temperature
Thermometer B reading = evening temperature
Difference in the temperature :
(Thermometer B reading - Thermometer A reading)
Expenses: $6.00 + $4.50 + $2.50 = $13.00
income = balance + expenses
income = $3.52 + $13.00
income = $16.52
Answer:
L = 8.366
Step-by-step explanation:
Given
A(0,0,0)
H(3,5,6)
we can apply the equation
L = √((xH-xA)²+(yH-yA)²+(zH-zA)²)
where L is the length of the diagonal of the box
then
L = √((3-0)²+(5-0)²+(6-0)²)
⇒ L = √(9+25+36) = √70
⇒ L = 8.366
We can see the box in the pic shown.
