Convert the following:
2 answers:
<em>Answers</em><em>:</em>
<em>a</em><em>.</em><em> </em><em>2</em><em>5</em><em>0</em><em>0</em><em>0</em><em>0</em><em>0</em><em> </em><em>grams</em>
<em>B.</em><em> </em><em>1</em><em>2</em><em>0</em><em>6</em><em>0</em><em>0</em><em>0</em><em> </em><em>seconds</em>
<em>c</em><em>.</em><em> </em><em>8</em><em>6</em><em>4</em><em>0</em><em>0</em><em> </em><em>seconds</em><em>.</em>
<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em>
<em>Good</em><em> </em><em>luck</em><em> </em><em>on</em><em> </em><em>your</em><em> </em><em>assignment</em>
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Answer:
time at which Kathy overtakes Stan is 6.70 sec
Explanation:
given data
time = 1 sec
acceleration= 3.4 m/s²
acceleration = 4.49 m/s²
to find out
the time at which Kathy overtakes Stan
solution
we consider here travel time for kathy = t1
and travel time for stan is = t2
and we know initial velocity = 0
so
t1 = 1 + t2
and distance travel equation by kinematic is
d1 = ut + at²
d1 = 0+ 4.49 (t2)² ................1
and
d2 = 0 + 3.4 (1+t2)² ..................2
and when overtake distance same so from equation 1 and 2
4.49 (t2)² =
3.4 (1+t2)²
t2 = 6.703828 sec
so time at which Kathy overtakes Stan is 6.70 sec
Answer:
tension is 0.692 N
magnetic force is 0.401 N
Explanation:
given data
mass = 57.5 g = 0.0575 kg
long = 38.8 cm = 0.388 m
displace = 22.5 cm = 0.225 m
to find out
free-body diagram , tension and magnetic force
solution
we consider here angle is θ
so free body diagram is attach below
and
here cosθ = x/l
so θ = cos^-1 ( 0.225 / 0.388)
θ = 54.6°
so tension from net force is
net vertical force
t sinθ - F(g) = 0 ...........1
t = F(g) / sinθ
t = mg /sin54.6
t = 0.0575 ( 9.8) / sin54.6
t = 0.692
so tension is 0.692 N
and
net horizontal force
- t cosθ + F(magnetic) = 0 ....................2
t cosθ = F(magnetic)
put here all value
F(magnetic) = 0.692 × cos 54.6
F(magnetic) = 0.401
so magnetic force is 0.401 N
