• If there was a room fan blowing air and other fans blowing air from the sides, would that slow the air wave from the room fan? more details?

    Your answer: 
    So say you have an average room fan blowing a gust of air across a room. Then you have several room fans arranged to the sides of the air stream from the main fan. Then say these fans are moving towards the main fan. So they are blowing across the gust from the main fan and also moving towards the main fan, say they are on a treadmill or something.... show more
    37 mins ago
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  • Physics please please help it should be easy but for some reason I haven’t gotten it?

    Your answer: 
    An object slows down to 4.02 m/s in 3.5 s traveling a distance of 31.6 m. What was the initial velocity? What was the acceleration of the object?
    2 hours ago
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  • Help with physics question?

    Your answer: 
    Given the figure above, if a = 10.1 cm and b = 7.55 cm, what would be the force (both magnitude and direction) on the 5.0 nC charge? For direction specify it as an angle measured clockwise from the positive x-axis.
    2 hours ago
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  • Just something I ve been curious about.?

    Your answer: 
    I know this sounds absurd but I ve been really curious about it and I don t know why. What would happen if all of the continents slammed into Africa at, say, 20 mph? What about 50 mph and 100mph?
    2 hours ago
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  • Medical Physics?

    Your answer: 
    I need 4 production methods of radio pharmaceuticals.
    4 hours ago
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  • Cats Physics?

    Your answer: 
    How can a cat, when let go from an elevated position, rotate itself so that it lands in the correct position despite the fact that no external torque was applied to the cat? (If it rotates 180 degrees to land legs first onto the ground, doesn't that violate Newton's First Law of Motion about inertia)?
    6 hours ago
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  • Fnet on moving object?

    Your answer: 
    Hi there! I'm taking physics as an online course, and I've ran into a question that I haven't read anything about before. 'An 2.0 kg object is moving horizontally in a straight line with a constant speed of 4.0 m/s along a surface that produces a friction force of 13 N. What is the net force acting on the object?' How would I... show more
    7 hours ago
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  • Microscope physics problem help!!?

    Your answer: 
    the image formed by a microscope objective with a focal length of 5.00mm is 160mm from its second focal point. The eye-piece has a focal length of 26mm. The unaided eye can distinguish two points at its near point as separate if they are 0.1mm apart. What is the minimum separation that can be observed or resolved through this microscope? I know the... show more
    7 hours ago
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  • Electric Field of a Continuous Charge Distribution?

    Your answer: 
    A thin 1.00 m ́ 1.00 m square metal plate is given a total charge of -2.00 ́ 10-6 C. An electron is then placed 1.00 cm above the centre of the plate. What is the acceleration of the electron? Found the surface charge density as -2.00 * 10^-6 C/m^2, but not sure how to proceed from there.
    9 hours ago
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  • A dipole is located at the origin, & is composed of charged particles with charge +e & -e, separated by distance 5 ✕ 10-10 m along x axis.?

    Your answer: 
    A dipole is located at the origin, and is composed of charged particles with charge +e and -e, separated by a distance 5 ✕ 10-10 m along the x axis. The charge +e is on the +x axis. Calculate the electric field due to this dipole at a location <0, -3 ✕ 10-8, 0> m.
    9 hours ago
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  • Projectile motion problem. A potato gun fires a potato straight up with an initial velocity of 28 m/s?

    Your answer: 
    A) How long does the potato take to reach its maximum height? B) How high does it rise? For A, I got 2.9 seconds and for B I got 39.97 meters. For A, I used the equation Vf = Vi + at and for B I used Vf^2 = Vi^2 + 2a(Xf-Xi). However, when I use an online projectile motion calculator and put in the same given conditions, I was getting 5.7... show more
    10 hours ago
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  • Due very soon!!! What is the acceleration due to earths gravity at this point?

    Your answer: 
    On the way to the moon, the Apollo astronauts reach a point where the Moon’s gravitational pull is stronger than that of Earth’s. Find the distance of this point from the center of the Earth. The masses of the Earth and the Moon are 5.98 × 1024 kg and 7.36 × 1022 kg, respectively, and the distance from the Earth to the Moon is 3.84 × 108 m. Answer... show more
    10 hours ago
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  • Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers?

    Your answer: 
    Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers. Suppose a siren produces a sound that has an intensity level of 120 dB at a distance of 2.0 m. Treating the siren as a point source of sound, and ignoring reflections and absorption, find the intensity level heard by an observer at a distance of 12... show more
    10 hours ago
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  • What is the electric field strength?

    Your answer: 
    An electron moving parallel to a uniform electric field increases its speed from 2.0 × 107 m/s to 4.0 × 107 m/s over a distance of 2.1 cm.
    10 hours ago
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  • Please help with physics? Thank you ina advance! Always reward best answer!?

    Your answer: 
    A 1210 kg rollercoaster car is moving 6.33 m/s. As It approaches the station, brakes slows it down to 2.38 m/s over a distance of 4.20 m. How much force dis the brakes apply?
    11 hours ago
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  • Physics magnetics problem?

    Your answer: 
    Five small identical metal balls are hung from insulating silk threads and are handled only by the threads. They are not allowed to touch one another during the following experiment. It has previously been found that none of the balls are affected by a magnet. The balls are brought near each other, and the following observations are recorded: 1.... show more
    11 hours ago
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  • What's a millenial?

    Your answer: 
    In Lamen's Terms
    11 hours ago
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  • Where along the positive x-axis can a third charge be placed such that the resultant force charge be zero?

    Your answer: 
    In the figure, charge q 1 = 3.1 × 10-6 C is placed at the origin and charge q 2 = -8.1 × 10-6 C is placed on the x-axis, at x = -0.20 m. Where along the positive x-axis can a third charge Q = -8.3 µC be placed such that the resultant force on this third charge is zero?
    12 hours ago
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