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A picture is supported by two cords, each making an angle 53o with the horizontal. If the tension in each cord is 10 Newton.
(a) Calculate the weight of the picture?
(b) Could a picture be supported by two horizontal cords?
Two slits with a separation of 8.5 x 10-5 m create an interference pattern on the screen 2.3 m away. what is the linear distance from the central bright fringe to the tenth dark fringe above it
The induced electric field 15 from the axis of a solenoid with a 10 radius is 46. Find the rate of change of the solenoid's magnetic field
A velocity selector has an electric field of magnitude 2620 N/C,directed vertically upward, and a horizontal magnetic field that isdirected south. Charged particles, traveling east at a speed of6.75 x 103 m/s, enter the velocity selector and are ab..
The charge and the mass of an alpha particle are = 3.20×10-19 and = 6.68×10-27 , respectively. What is the final velocity of the alpha particle
An airfoil in a test chamber is exposed to air. Well ahead of the airfoil the pressure, temperature, and density are standard sea level conditions. Determine the velocity of the airflow
A far-sighted student has a near point of 43.2 cm. Calculate the focal length of the glasses needed so the near point will be normal (25 cm)
An electron is released from rest at the negative plate of aparallel plate capacitor and accelerates to the positive plate. The plates are separated by a distance of 1.4 cm, and the electricfield within the capacitor has a magnitude of 2.2 x 106V/..
High-speed stroboscopic photographs show that the head of a 200-g golf club is traveling at 45 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, illustrate what is the new pressure of the gas?
A commuter train blows its 200-Hz horn as it approaches a crossing. The speed of sound is 335 m/s. An observer waiting at the crossing receives a frequency of 208 Hz. What is the speed of the train
a farsighted man has a contact lens prescription of 2.8 diopters enabling him to see items in focus when they are no
A .42 kg copper penny drops a distance of 51.3m to the ground. determine the magnitude of the increase in internal energy
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