What is the weight of an object with a mass of 19 kg?
2 answers:
<u>Statement</u><u>:</u>
Mass of an object is 19 Kg.
<u>To </u><u>find </u><u>out:</u>
The weight of the object.
<u>Solution</u><u>:</u>
Mass of the object = 19 Kg
Acceleration due to gravity =
We know, weight = mass × acceleration
Therefore, weight of the object
= (19 × 9.8) N
= 186.2 N
<u>Answer</u><u>:</u>
The weight of the object is 186.2 N.
Hope you could understand.
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Answer:
Energy converted =
Explanation:
Recall that Power is the rate at which energy is transferred therefore defined by the mathematical formula:
Since the information on the power of the runner is given, as well as the time the energy conversion takes place, we can then use this equation to find how much energy is been converted. Notice that we just need to change the given time *10 minutes) into the appropriate units (seconds)to get the answer in SI units of energy (Joules). The conversion of 10 minutes into seconds is done by multiplying : 10 minutes * 60 seconds/minute = 600 seconds.
We use this then to find the energy converted by the runner:
<span>H(t) = -16t^2 + vt + s
</span><span>Part A:
</span>Using the given data:
H(t)= -16*t² + 60*t + 82;
Part B:
Put H(t)=0
0<span>= -16*t² + 60*t + 82;</span>
Use the quadratic formula to find t.
See the attachment...'t' is replaced with 'x'.
</span><span>Part A:
</span>Using the given data:
H(t)= -16*t² + 60*t + 82;
Part B:
Put H(t)=0
0<span>= -16*t² + 60*t + 82;</span>
Use the quadratic formula to find t.
See the attachment...'t' is replaced with 'x'.