My guess is A. I'm not 100% positive but i'm pretty sure.
The force on the fry is 
Explanation:
We can find the force acting on the fry by using Newton's second law:
where
F is the net force on the fry
m is its mass
a is its acceleration
For the fry in this problem,
Therefore, the force exerted on the fry is
Learn more about Newton's second law here:
brainly.com/question/3820012
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We have to use the equation speed=distance/time.
We want the average speed in second so we have to change the minutes into seconds. We can do this by multiplying the minutes by 60 (60seconds in 1 minute). 60x1.4= 84 seconds.
Speed=distance/time, distance is 82 and time is 84 so speed=82/84
Average speed = 0.98ms^-1 (2dp)
The surface area of the smaller pyramid is determined as 42.7 cm².
<h3>
Area of pyramids</h3>
The base area of the two similar pyramid is given as follows;
Base area of large pyramid = 16 cm²
Base area of smaller pyramid = 12.2 cm²
<h3>
Surface area of the similar pyramids</h3>
The surface area of the smaller pyramid is calculated as follows;
s₁/b₁ = s₂/b₂
s₁/12.2 = 56/16
s₁ = 42.7 cm²
Thus, the surface area of the smaller pyramid is determined as 42.7 cm².
Learn more about base area of pyramids here: brainly.com/question/16060915
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Answer:
4.535 N.m
Explanation:
To solve this question, we're going to use the formula for moment of inertia
I = mL²/12
Where
I = moment of inertia
m = mass of the ladder, 7.98 kg
L = length of the ladder, 4.15 m
On solving we have
I = 7.98 * (4.15)² / 12
I = (7.98 * 17.2225) / 12
I = 137.44 / 12
I = 11.45 kg·m²
That is the moment of inertia about the center.
Using this moment of inertia, we multiply it by the angular acceleration to get the needed torque. So that
τ = 11.453 kg·m² * 0.395 rad/s²
τ = 4.535 N·m
