Recent content by mikejones2000

Ok, I resolved all of the problems except this one: The intensity of solar radiation at the top of Earth's atmosphere is 1340 W/m3. Assuming that 60% of the incoming solar energy reaches Earth's surface and assuming that you absorb 50% of the incident energy, make an order-of-magnitude estimate...

Hey all, any help with any of these problems would be greatly appreciated, I have attempted all but one(because I do not even know where to start). Homework Statement A 58.0 resistor, a 3.00 µF capacitor, and a 0.400 H inductor are connected in series to a 77.0 V (rms), 60.0 Hz source. (a)...

I am currently stuck on these two problems dealing with ohm's law. I understand that a current is equal to 1/r(va-vb) but am lost in the question somehow. I do not know how to post the two figures so I will try my best to explain it. The figure for problem 1(a) has a 12 v car battery with the...

Question: Organ pipe A, with both ends open, has a fundamental frequency of 450 Hz. The third harmonic of organ pipe B, with one end open, has the same frequency as the second harmonic of pipe A. Use 343 m/s for the speed of sound in air. a)How long is pipe A? b)How long is pipe B? I...

Question: An ambulance with a siren emitting a whine at 1300 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1280 Hz. Use 343 m/s for the speed of sound in air. How fast is the ambulance moving? i set up the doppler equation...

In Figure 12-38, a 50 kg rock climber is in a lie-back climb along a fissure, with hands pulling on one side of the fissure and feet pressed against the opposite side. The fissure has width w = 0.20 m, and the center of mass of the climber is a horizontal distance d = 0.40 m from the fissure...

A tunnel of length L = 154 m, height H = 7.4 m high, and width 6.1 m (with a flat roof) is to be constructed at distance d = 60 m beneath the ground. (See Figure 12-50.) The tunnel roof is to be supported entirely by square steel columns, each with a cross-sectional area of 960 cm2. The mass of...

I got 0.0989 for the first problem, I am not sure if its in kilograms or grams and 0.875 for the second one. I know I got at least one problem out of the three assigned and presume it has to be one of these because the other is a multiple choice problem. Thanks in advance for any help.

I am currently stuck on two problems: #1 A bat hits a moving baseball. If the bat delivers a net eastward impulse of 0.9 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west and leaves with a 5.3 m/s velocity to the east, what is the mass of the ball (in grams)...

Wouldnt that give me the velocity function? Am i supposed to have two integrals of 6t-8 with those bounds, add them up and multiply by the mass and original velocity function and then integrate from 0 to 3?

{6t-8 if x>4/3 so |6t-8|={-(6t-8) otherwise. I am not really sure how to run with this

I followed the process as stated and keep getting a wrong solution for some reason, the following are the steps I took: x=3t^3-4t^2+3t (dx/dt)=3t^2-8t+3 (|d^2x/d^2t|)=6t+8. 3(6t+8)=18t+24=F V=3t^2-8t+3 (18t+24)(3t^2-8t+3)=54t^3-120t^2-138t+72=P(t) Integration of P(t)...

I don't really kow how to resolve my vector componets into something I can use the dot porudct for some reason. My force vector has one variable while my velocity vector is an exponential equation and am kinda clueless how to dot them.

I derived the velocity with respect to time from the function and then derived acceleration from the the velocity and multiplied the accerleration with the mass to find the force. I then multiplied the force with the velocity to find instantaneous power and integrated with respect to the...

Im sorry but for some reason I am not understanding the solution you stated. I still have a variable in my force equation after deriving the accerleration and don't understand what to do next. I understand that plugging in t=3 will give me the displacement that particle traveled in that...