Then the time interval during which the rocket engine provides upward acceleration in 2.1s hope this helps have more photos but can’t put them more in brainliest is appreciated
The correct answer to the question is: 78.4 N.
CALCULATION:
As per the question, the mass of the object is given as m = 8 Kg.
We are asked to calculate the force of 8 Kg object pushing up from the table.
The force pushing up from the table is nothing else than the normal reaction.
The normal reaction of the object is equal to the weight of the object as the object is simply resting on the table.
Hence, normal reaction = Weight
= mg
= 8 × 9.8 N.
= 78.4 N.
Here, g is known as acceleration due to gravity.
Hence, the force of the object pushing up from the table is 78.4 N.
Answer:
time required to mow lawn is 1274.06 minutes
Explanation:
given data
average mow = 1400 square meters each hour
area = 320000 square feet
to find out
How many minutes will take to mow lawn
solution
we know that here 1 square feet is equal to 0.092903 square meter
so 320000 square feet will be = 0.09203 × 320000 = 29728.9728 square meter
so time required is express as
time required = 
time required = 
time required = 21.23 hours
so time required = 21.23 × 60 min = 1274.06
time required to mow lawn is 1274.06 minutes
Answer:
I /
= 1.48
, The correct answer is d
Explanation:
the moment of inertia is given by
I = ∫ r² dm
For figures with symmetry it is tabulated. In the case of a thin variation, the moment of inertia with respect to its center of mass is
= 1/12 M L2
There is a widely used theorem, which is the parallel axis theorem, where the moment of inertia of any parallel axis, is the moment of mass inertia plus the moment of inertia of the body taken as a particle
I =
+ M D²
Let's put these expressions to our case.
As the bar is one meter long its center of mass that this Enel midpoint corresponds to
= 1/12 m L²
= 1/12 m 1.00²
= 8.33 10⁻² m
Let's use the parallel axes theorem for the axis that passes through x = 30 cm. The distance from the enrode masses to the axis is
D =
- 0.30
D = 0.50 - 0.30 = 0.20 m
I =
+ m D²
I = 8.33 10⁻² m + m 0.2²
I = (8.33 10⁻² + 4 10⁻²) m
I = 12.33 10⁻² m
The relationship between these two moments of inertia
I /
= 12.333 10⁻² / 8.333 10⁻²
I /
= 1.48
The correct answer is d