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A hoop with mass 2.2kg and diameter 1.2 m rolls to the right with no slipping at a steady 3.00 rad/second.Find the velocity vector of each as viewed by a person at rest on the ground.(i) the highest point of the hoop(ii) the lowest point of the hoop(iii) a point on the hoop to the right midway between the top and bottomand find the velocity vector of each part as viewed by a person moving alongside the hoop aswell.
You are an astronaut, and you observe a small planet to be spherical. What is the mass of the planet
A singly charged positive ion has a mass of3.20×10–26 kg. After being acceleratedfrom rest through a potential difference of 833 V, the ion enters amagnetic field of 0.920 T along a direction perpendicular to thedirection of the field.
A point is located at r = 42mmi - 71mmj + 90mmk. It is first rotated about the x-axis by +82o, and then rotated about the z-axis by -35o
A lamp (R=150), an electric heater (R=23), and a fan (R=50) are connected in parallel across a123V line. calculate the power is expended in the heater
In a physics lab experiment, a student immersed 206 one-cent coins (each having a mass of 3.00g ) in boiling water. What was the final temperature of the coins
Determine the horizontal distance the skier travels before coming to rest if the incline also has a coefficient of kinetic friction equivalent to 0.210
A helium nucleus (charge +2e) moves through a potential difference V = ?0.40 kV. Its initial kinetic energy is 3.40 10-16 J. What is its final kinetic energy
The coefficient of kinetic friction between a 20 Kg box and the floor is 0.40. How much work does a pulling force do on the box in pulling it 8.0 m at the constant speed? The pulling force is directed 390 above the horizontal.
The car's motion can be divided into three different stages: its motion before the driver realizes he's late, its motion after the driver hits the gas (but before he sees the police car), and its motion after the driver sees the police car. Which of ..
an 8.78-kg block slides with an initial speed of 1.62 ms down a ramp inclined at an angle of 27.1deg with the
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
A 200 W speaker is playing at full power. The speaker is at the center of a 1 m radius spherical chamber. What is the total sound power that reaches the walls
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