Answer:
Centripetal Acceleration = 2.701 m/s²
Explanation:
Given:
Starting from rest so initial angular velocity ωi = 0 rad/s
Final angular velocity ωf= 78 rev/min =78 × 2π /60 rad/s = 8.168 rad/s
Radius of Rim =d/2 =12/6= 6 in = 6× 2.54 cm =15.24 cm = 0.1524 m
angular acceleration α = (ωf - ωi)/t = (8.168 rad/s - 0 rad/s)/2.91 s
α =2.807 rad/s²
now to find angular velocity at 1.5 s we have
ω = α × t = 2.807 rad/s² × 1.5 s = 4.210 rad/s
so centripetal acceleration ac = ω² r = (4.210 rad/s)² × 0.1524 m
ac= 2.701 m/s²
Answer:
c.they have opposite charges.
Explanation:
because the protons have a positive charge and the neutrons have no charge.
Answer:
A) 1.5 V
B) 4.5 V
Explanation:
A) Batteries in parallel have the same voltage as an individual battery.
V = 1.5 V
B) Batteries in series have a voltage equal to the sum of the individual batteries.
V = 1.5 V + 1.5 V + 1.5 V
V = 4.5 V
Answer:
tan 75/350
Explanation:
the cliff is the height 75 and the length is 350 the other side is added to form a triangle . the tan rule is then used.
La gente de la cara de vuelta a las dos a las que y que no me ha