Answer:
1879.33J
874.1W
Explanation:
Given parameters:
Distance covered = 2.91m
Time taken = 2.15s
Mass of Bart = 65.9kg
Unknown:
Work done = ?
Power rating = ?
Solution:
Here, the work done is related to the the potential energy in climbing this flight of stairs.
Work done = Potential energy = mgH
where m is the mass
g is the acceleration due to gravity
H is the height
Work done = 65.9 x 9.8 x 2.91 = 1879.33J
Power is defined as the rate at which work is being done.
Power = 
= 
= 874.1W
kinetic <span>energy when the pitcher has thrown it or when one of the other players has thrown the ball. The baseball also has </span>kinetic<span> energy when the batter hits the ball. when you catch the ball it is potential energy.</span>
<span>The student's power rating is approximately 800W.
</span>
Power is the rate of doing work. Its SI unit is Watt. 1 W = 1J/sec
Given: <span>The work done to get to the top is 1200 Joules
</span>
Time = 1.5 seconds.
Power =
Answer:
when the pencil is balanced on a point it is motionless due to net force only acting trough the center, but when we release the position we are changing the location of a pencil hence due to turning affect it will expericence torque and the angular acceleration produced.
for the complete answer the length and mass of pencil should be known i am giving the general expression for the calculation of angular acceleration
Explanation:
<h3>τ=Iα</h3><h3>τ= torque</h3><h3>I = inertia</h3><h3>α= angular acceleration</h3>
where
I= mL^2/3 (by geometry of pencil)
when the pencil is released it will experience force due to weight
F=mgsinθ
so τ=Fxd
τ=mgsin(10°)x(L/2)
then.
α=τ/I
α=mgsin(10°)xL/2÷(mL^2)/3
The physical activity that a global positioning system resource can help me with is : ( A ) Hiking
<h3>Function of Global positioning system ( GPS ) </h3>
GPS helps with the accurate measurement of physical activities and factors such as location, time, elevation and so on. When hiking, the time, distance covered and location of the hiker can be accurately measured with the use of the GPS.
Hence we can conclude that The physical activity that a global positioning system resource can help me with is Hiking.
Learn more about GPS : brainly.com/question/9795929
#SPJ1
