Reference no: EM135133
Q1. Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.6 × 106 kg/s. The acceleration of gravity is 9.81 m/s2 .If half the potential energy of this water was converted into electric energy, how much power would be formed by these falls?
Give answer in units of MW.
Q2. Two stationary positive point charges, charge 1 of magnitude 3.30 nC and charge 2 of magnitude 1.80 nC, are separated by a distance of 31.0 cm. An electron is released from rest at the point midway between the two charges, and it moves all along the line connecting the two charges.
What is the speed v_final of the electron when it is 10.0 cm from charge 1?
Q3. A rotating uniform-density disk of radius R =0.55 m and mass M = 6 kg is mounted in the vertical plane. A lump of clay with mass m = 0.5 kg falls and sticks to the outer edge of the wheel at the location A = (-0.5, 0.229129, 0) m (choice of axes: x to the right, y up, z out of the page; origin at the center of the axle). Just by the impact, the clay has speed v0 = 9 m/s, and the disk is rotating clockwise with angular speed w0 = 0.4 rad/s.
Just following the impact, what is an angular speed of the combined system of wheel plus clay?
|
What is velocity of the ice skater after throwing snowball
: A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
|
|
Discover the height of the building
: A submarine is 304 m horizontally out from the shore and 126 m beneath the surface of the water. A laser beam is sent from the sub so that it strikes the surface of the water at a point 232 m from the shore. If beam just strikes the top of a building..
|
|
Report changes on primavera
: Can you write a part of project which is about developing a schedule of power substation on primavera (P6), focusing on the Changes that will happen based on the following:
|
|
What is the magnification of an image
: A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image.
|
|
What is an angular speed of the combined system
: Just by the impact, the clay has speed v0 = 9 m/s, and the disk is rotating clockwise with angular speed w0 = 0.4 rad/s. Just following the impact, what is an angular speed of the combined system of wheel plus clay.
|
|
The greatest magnetic field strength for the wave
: A transverse electromagnetic plane wave with a frequency of 2.84 MHz travels directly away from you (- z direction). At time t = 0, your magnetic field detector measures a magnetic field of 4.57 × 10-8 Tesla pointing down (- y direction) that further..
|
|
Define risk, scrm and different types of supply chain risk
: Define Risk, SCRM and different Types of supply chain risk. Analyse three theories or models which have been used in managing supply chain risk.
|
|
What should be the minimum voltage be on an x-ray tube
: The K-shell ionization energy of copper is 8979 eV. The L-shell ionization energy is 951 eV. Determine the wavelength of the Kα emission line of copper. What should be the minimum voltage be on an x-ray tube with a copper target in order to see the K..
|
|
Examine two legal responsibilities that employers have
: Examine two legal responsibilities that employers have regarding their participation in unions. Suggest two methods in which management as well as unions may negotiate mutually beneficial contracts.
|