Q=l^2 times R times t
Where Q - heat, I -current, R - resistance and t is time
If you increase I twice (and it's squared), than Q gonna went up 4 times (2 squared).
Choose last
Answer;
= 0.244 seconds
Explanation;
500 rpm is equivalent to; 1500 × 2π radians per minute
= 9424.8 rad/minute
To get revolutions per second we divide by 60
= 9424.8/60
= 157.08 radians per second.
Then we divide by 64.3 rad/s^2 to get time;
= 157.08/64.3
= 0.244 seconds.
B. A wave travels through medium. Hope this helped!
Answer:
10512m
Explanation:
Using formula for Uniform Velocity v = D/t ;
where v = Velocity (367 m/s); D = Vertical distance (?); t = length of time of motion (?).
To find t we use the Kinematic equation D= v₀t + (1/2(at²));
where D = Distance traveled (4020m); v₀ = initial velocity (0); a = acceleration;
4020 = (0)t + (1/2(9.8)t²)
4020 = 1/2(9.8)t²
t² = 4020/(1/2(9.8))
t = √(4020/4.9).
back to our formula for Uniform Velocity v = D/t;
D = vt
D = (367)(√(4020/4.9))
D ≈ 10512m