Recent content by seraphimhouse

i could find the charge of the lightning bolt by q = it given i = 30,000 A and t = 50 x 10^-6 s q = 30,000A) * (50 x 10^-6 s) = 1.5 C but how can I find the charge deposited onto the plane at 20,000 feet?

Homework Statement A lightning bolt carrying 30,000 A lasts for 50 microseconds. If the lightning strikes an airplane flying at 20,000 ft, what is the charge deposited on the plane? Homework Equations q(t) = \int i(x)dx The Attempt at a Solution So, using the equation above I...

Homework Statement The figure shows a thin plastic rod of length L = 11.8 cm and uniform positive charge Q = 58.9 fC lying on an x axis. With V = 0 at infinity, find the electric potential at point P1 on the axis, at distance d = 3.45 cm from one end of the rod...

yes I have converted them to nano C

Homework Statement Flux and nonconducting shells. A charged particle is suspended at the center of two concentric spherical shells that are very thin and made of nonconducting material. Figure (a) below shows a cross section. Figure (b) below gives the net flux Φ through a Gaussian sphere...

I substituted it for T = I\alpha I used -Ftr = I [a/r] Them subbed in Ft = P - ma rma - rP = I a/r I cleaned it up and still got 4 m/s^2 which still gave me 20 rad/s^2

Homework Statement A wheel of radius 0.358 m is mounted on a frictionless horizontal axis. The rotational inertia of the wheel about the axis is 0.0421 kg·m2. A massless cord wrapped around the wheel is attached to a 3.21 kg block that slides on a horizontal frictionless surface. If a...

Thank you!

so would m be half the mass of the rod plus the mass of one ball?

Homework Statement Attached to each end of a thin steel rod of length 1.00 m and mass 6.80 kg is a small ball of mass 1.15 kg. The rod is constrained to rotate in a horizontal plane about a vertical axis through its midpoint. At a certain instant, it is rotating at 43.0 rev/s. Because of...

Homework Statement Figure 9-48 gives an overhead view of the path taken by a 0.160 kg cue ball as it bounces from a rail of a pool table. The ball's initial speed is 1.47 m/s, and the angle θ1 is 62.9°. The bounce reverses the y component of the ball's velocity but does not alter the x...

M(heavy)a + fk(heavy) - Fg(hanging)cos(theta) = Fg(light)cos(theta) - fk(light) - m(light)a The tension force from the heavy block and the light block. a = [Fg(light)cos(theta) - Uk(light)Fn(light) - Uk(heavy)Fn(Heavy) + Fg(heavy)cos(theta)] / (m(hang) + m(light) The answer in the back...

I setted them both equal to the tension and solved for a.

Homework Statement Two blocks, of weights 3.6 N and 7.5 N, are connected by a massless string and slide down a 30° inclined plane. The coefficient of kinetic friction between the lighter block and the plane is 0.10; that between the heavier block and the plane is 0.20. Assuming that the...

Homework Statement At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.6 m/s2. At the same instant a truck is 11.1 m down the road and traveling with a constant speed of 9.4 m/s. (a) How far beyond the traffic signal will the automobile...