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An investor is considering two brokerage firms. One is a discount broker offering no investment advice, but charging only $50 for the amount the investor intends to invest. The other is a full-service broker who charges $200 for the amount of the intended investment. If the investor chooses the discount broker, there is a 0.45 chance of a $500 profit (before charges) over the period of the investment, a 0.35 chance of making only $200, and 0.20 chance of losing $100. If the investor chooses the full-service broker, then there is a 0.60 chance that the investment will earn $500, a 0.35 chance that it will earn $200, and a 0.05 chance that it will lose $100. What is the best investment advice in this case?
As astronauts travel between the Earth and the moon, their mass remains constant, but their weight diminishes. Assume the Earth and moon are in a fixed position relative to each other and the astronauts travel directly from the Earth to the moon.
A 1.30-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 15.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis).
A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.4 × 1013 kg·m/s. Find the relativistic momentum of the spacecraft
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. Compute with what speed and angle of impact does the stone land
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds can reach103dB, measured a distance of4.5m from the source. Determine the ..
Find the net electric field
The electric field phasor of an electromagnetic wave in air is given by- E(z) = y 0.750 sin( 250 π z) V/m
Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.? Imagine adding electrons to the pin until the negative charge has the very l..
A duck has a mass of 3 kilogram. As the duck paddles, a force of 0.10 Newton acts on it in a direction due east. Estimate the magnitude and direction (relative to due east) of displacement that the duck undergoes in 3.9 second while the forces are ..
An object of mass 5kg has an initial velocity of 10m/s, if this object has moved a distance of 40m and maintains a final velocity of 20m/s. What is the external force encountered by this object
A Young's double-slit interference experiment gives bright fringes separated by 2.5 cm on a screen when the experiment is performed in air. What is the new spacing between bright fringes
In an integrated circuit, the current density in a 2.9 ??m?thick× 71 ??m?wide gold film is 7.7×105A/m2, How much charge flows through the film in 15 min
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