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Nickel is a transition element and has a variable valence.Using a nickel salt, 2 F (faradays) plate out 39.2 g ofnickel. What ions are in the solution of this salt? Atomic molar masss Ni = 58.7 g&mi
What historical and cultural elements might account for Qianlong’s refusal of Great Britain’s offer of trade and diplomatic recognition?
Calculate the speed of an 8.5 × 104 kg airliner with a kinetic energy of 1.2 × 109 J
A propeller is modeled as five identical uniform rods extending radially from its axis. what is its rotational kinetic energy
What is he wavelength of a 22.75*10^9 Hz radar signal. What is the frequency of an X-ray with wavelength 0.12nm
The ascetic lifestyle known as _____________ became very popular when Christianity became legal in the fourth century. Plato he advocates a state ruled by a philosopher-king in _______________. ______
A 27.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 35.0° with the vertical, Neglecting friction, find the child's speed at the lowest positi
An object with total mass mtotal = 14 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg, What is the magnitude of the velocity of the center of mass of the piec
Lenin said "control te commanding heights of the economy."
A current of 74.8 mA exists in a metal wire, In what direction do the electrons travel with respect to the current
A 0.360 kg pendulum bob passes through the lowest part of its path at a speed of 2.86 m/s, When the pendulum reaches its highest point, what angle does the cable make with the vertical
practice a mystical form of the Islamic faith that is sometimes expressed through dancing or chanting. _________ was the Roman General who conquered Gaul, then went on to march on Rome and make himsel
When a-particles with energy of 5MeV are scattered on a thin gold foil, it is found that 10,000 a-particles are scattered at an angle greater than 50o, How many will be scattered between 70o and 80o
Think of the relationship between Kirchoff's Junction Rule and conservation of charge, Why cant charge build up at a junction of wires
The belief that creating and venerating religious images is wrong is known as __________. The form of Christianity called ________ was condemned as heretical under Constantine. The Greek philosopher _
A device operates in a three process cycle. In process one, the device receives 35kJ of heat and does no work. Determine the COP or efficiency as applicable
The Delian League was created to. The people/person known as Homer knew about Mycenaean world because. According to the most ancient legends of the Republic period, the kingdom of Rome was established
A curve of radius 65 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve
An initially uncharged air-filled capacitor is connected to a 4.01-V charging source, Find the capacitor's potential difference and charge after the insertion
The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10-9 m2 and a thickness of 1.1 x 10-8 m, how many such ions are present on the outer surface
Minoan civilization was located on. All of the following are true of the Mycenaeans except that. The hoplites were. Macedon first became the leading power in Greece under. Which of
Two protons are maintained at a separation of 803 nm. Calculate the electric potential due to the two particles at the midpoint between them
In one day, a 90kg mountain climber ascends from the 1520m level on a vertical cliff to the top at 2360m, What is her change in gravitational potential energy on the first day
What person actually did the governing in each province of the Muslim Empire? Which group paid the highest percentage of their income in taxes?
Tarzan, in one tree, sights Jane in another tree. He grabs the end of a vine with length 20 m that makes an angle of 45, Calculate Tarzan's speed just before he reaches Jane