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On her way to school, a child discovered that her coin is missing and there is a hole in her pocket. She turned back and walked 24m east along the sidewalk. Then, she stopped for 18s and decided to head back to school. After walking 11m west, she found the coin. If the child walked back at a speed of 0.25m/s, calculate
a) her average velocity while searching for the coin.
b) her average speed while searching for the coin.
The electron beam inside a television picture tube is 0.4 mm in diameter and carries a current of 55 µA. What is the power delivered to the screen by the electron beam
A hollow conducting sphere has an inner radius of r1 = 0.19 m and an outer radius of r2 = 0.35 m, What is the field E in N/C 1 m from the sphere's outer surface
A tensile specimen has a 10mm minimum diameter and a 50mm guage lenght. The stress and strain follow a linear behaivour before the applied load reaches 8 x 10^4 N, what is the young modulus for this material
Co-60 is often used as a radiation source in medicine. It has a half-life of 5.25 years. How long, after a new sample is delivered, would the activity have decreased to about 1/3 its original value.
Use the following scenario for questions 8-10. The mass of Football Player A is 117 kg, and his linear velocity is 6.12 m/s. Calculate linear momentum of Football Player A
A generator has a square coil consisting of 288 turns. The coil rotates at 117 rad/s in a 0.218-T magnetic field. What is the length of one side of the coil
q1. a pipe open at one end has a fundamental frequency of 256 hz. a second pipeidentical to first pipe is shortened by
An ideal gas at 26.9°C and a pressure 1.60 105 Pa is in a container having a volume of 1.00 L. Find the number of moles of gas
A 6.40 nF capacitor is initially charged by a potential difference of 1.40×103 V. find the final electric potential energy stored in the capacitor
Calculate the gravitational force exerted on the satellite by the Earth when it is in orbit
If 0.040kg of ice at 0 C is added to 0.390kg of water at 30 C in a 0.130-kg aluminum calorimeter cup
question1how much 235u is consumed per year in gy to produce sufficient electricity to continuously run a 100-w light
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