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A 1.80 kg block slides on a rough, horizontal surface. The block hits a spring with a speed of 1.80 m/s and compresses it a distance of 11.0 cm before coming to rest. If the coefficient of kinetic friction between the block and the surface is µk = 0.560, what is the force constant of the spring? N/m
What is the ratio of the number of moles of air in the heated balloon to the original number of moles of air in the balloon
Explain, in detail, how globalization promotes migration
A potter's wheel moves uniformly from rest to an angular speed of 0.23 rev/s in 35.0 s. Find its angular acceleration in radians per second
What is the molar solubility of lead chromate in 0.10 M HNO3 if the Ksp for PbCrO4 is 2.8 x 10^-13 and Ka2 for H2CrO4 is 3.0 x 10^-7. Note that H2CrO4 is considered to be a strong acid.
In Example 8-10, mass m1 = 2.40 kg is connected to mass m2 = 1.80 kg as shown. Suppose the two masses start from rest and are moving with a speed of 1.95 m/s just before m2 hits the floor. (a) If the coefficient of kinetic friction is µk = 0.320, wha..
Geosynchronous satellites orbit the Earth at a distance of 4.217 × 107 m from the Earth's center. What is the weight of a 1750-kg satellite at this distance
What is the molar solubility of AgCl in 0.30 M NH3. Ksp for AgCl is 1.8 x 10^-10 and Kf for Ag(NH3)2+ is 1.7 x 10^7.
The wiring in the wall of your house to and from an outlet has a total resistance of typically 0.16 ohm . Suppose a device plugged into a 120 V outlet draws 14.9 A of current. (a) What is the voltage drop along the wire?
Light Bulbs in Series and in Parallel. Two light bulbs have resistances of 500 ? and 1000 ?. The two light bulbs are connected in series across a 110 V line. (a) Find the current through the 500 ? bulb. A Find the current through the 1000 ? bulb. ..
Determine the concentration of SO42- necessary to precipitate BaSO4 and SrSO4. Which compound, BaSO4 and SrSO4, precipitates first. What is the SO42- concentration when the second ion begins to precipitate
In a fluorescent tube of diameter 3 cm, 7 10^18 electrons and 1.75 10^18 positive ions (with a charge of +e) flow through a cross-sectional area each second, What is the current in the tube
A 2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path
q. a woman walks 252. m in the direction 65.0deg east of north then 212. m directly east.a find the final displacement
A pilot flies horizontally at 630 km/h, at height h = 48 m above initially level ground. However, at time t = 0, at what time t does the plane strike the ground
An 8-kg ball rolling at 2 m/s when it bumps into a pillow and stops. What is the impulse
what is the energy dissipated in the resistor for a battery with an emf of 12 volts connected to a 545-ohms resistor
A 10.0 kg object starting from rest falls through a viscous medium and experiences a resistive force R = - b v, Find the terminal speed of the object
Two free point charges +q and +4q are a distance l apart. Find the location, magnitude, and sign of the third charge
A balloon with a radius of 14.00cm and an electric charge of 3.75 × 10-9 C is brought within the electric field of the larger balloon so their centres are 40cm apart. Establish the magnitude of the electric force exerted by this electric field on ..
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
A juggler throws a ball straight up with some initial velocity. Half a second later, the juggler throws another ball straight up from the same height, then what is the initial velocity of each ball
To water the yard, you use a hose with a diameter of 3.5cm . Water flows from the hose with a speed of 1.5m/s. with what speed does water spray from the hose
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