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A racetrack is to have a banked curve with radius 240 m. What should be the angle of the bank if thenormal force alone is to allow safe travel around the curve at55.0 m/s?
once upon a time a famous zoologist was hunting antelope for a zoo with a dart gun that fired darts with a range of 100
An infinitely long line of charge has a linear charge density of 4.50×10?12 C/m. How close does the proton get to the line of charge
A person of mass 75 kg stands at the center of a rotatingmerry-go-round platform of radius 2.6 m and moment of inertia 1500 kg·m2. The platformrotates without friction with angular velocity 2.0 rad/s. The person walks radially to the edge of the p..
A 11.9-m-long wire of mass 132g is stretched under a tension of 250N . A pulse is generated at one end, Where will the two pulses first meet
How fast (in {rm rpm}) must a centrifuge rotate if a particle 8.5 cm from the axis of rotation is to experience an acceleration of 115000 {rm g}'s.
to avoid hitting a pedestrian a car driver slams on her brakes and comes to a complete stop after skidding 16 m. if the
A car rounds a circle of radius 180 m , going at 14.5 m/s. What's the car's acceleration if its speed is constant. Compute the new acceleration if the speed is increasing at a rate of 2.4 m/s^2
a light spring with spring constant 1300 nm hangs from an elevated support. from its lower end hangs a second light
Light is emitted from atoms whenever electrons transition to lowerenergy levels. You have a detector capable of observing hydrogenlight that may not be in the visible wavelength range. You measurethe wavelength of the light to be 397.1 nm.
A positively-charged object with a mass of 0.177 kg oscillates atthe end of a spring, generating ELF (extremely low frequency) radiowaves that have a wavelength of 5.86 x 107 m. Thefrequency of these radio waves is the same as the frequency atwhic..
When at rest, two trains have sirens that emit a frequency of 300Hz. The trains travel toward one another and toward an observer stationed between them. What is the speed of the second train
a straight wire lies along the y-axis initially carrying a current of 10 a in the positive y-direction. the current
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