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A 500 gram model rocket is on a cart that is rolling to the right at a speed of 3.0 m/s. The rocket engine, when it is fired, exerts an 8.0 Newton thrust on the rocket. Your goal is to have the rocket pass through a small horizontal hoop that is 20 meter above the launch point.
Find at what horizontal distance left of the loop should you launch?
Our closest stellar neighbor , alfa-centauri , is 4.3 light years away.it has been suggested that TV programs from our planet have reached this star and may have been viewed by the hypothetical inhabitants of a hypothetical planet orbiting this st..
A test tube contains 2.56 10-4 m3 of liquid carbon tetrachloride at a temperature of 75.5° C. Find the volume of carbon tetrachloride in the test tube at -11.7° C
If the measured parallax shift of star A was 0.1 arcsecs and the parallax shift of star B was 0.05 arcsecs, What is the distance of the farthest star in light-years
a sound wave travels twice as far in neon ne as it does in krypton kr in the same time interval. both neon and krypton
BIO Electric Potential across a Cell Membrane In a typical living cell, What is the magnitude and direction of the electric field within the cell membrane
An airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the least radius of the circular path? (b) At this radius, what is the force causing the centripe..
A grinder consists of a solid 15 kg disk with a diameter of 57 cm. A when active, the disk rotates at a rate of 83 rad/sec. find the rate of angular acceleration of the disk
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
Calculate the magnitude of the electric field at the origin due to the following distribution of charges: -q at (x,y) = (a,a), +q at (a,-a), +q at (-a,-a) and -q at (-a,a)
A ballistograph consists of a platform supported on air jets that allow sensitive recoil speed measurements of the human body, for example the human heart. If the typical human heart ejects 0.70 kg of blood with an average speed (or velocity) of 0.30..
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
A 18-cm-long nichrome wire is connected across the terminals of a 1.5V battery. what is the wire's diameter
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