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A person moves 25.0 m along 30 degrees north of east and then he moves 50.0 m due west. How far and in what direction he is from the starting point? Draw a clear diagram.
Ethyl alcohol (C2H5OH) has a density of806 kg/m3 and a volume of 1.34 10-3m3. Find the number of molecules in the liquid
A gurney is pushed across a level rug when the attendant lets go and the gurney rolls to a stop with an acceleration 1.4 m/s/s. find the mass of the gurney
Two capacitors are connected in parallel with a 12 v battery. Each has plates of area 16 cm^2. The plate seperations are d1=2mm and d2=3mm. how much work is done to move the slab
during a nascar race a car goes 50 ms around a curved section of the track that has a radius of 250 m. what is the cars
A parallel plate capacitor is made of two parallel disks of metal separaded by a gap. The radius of the disk is 2.0m, the distance between the plates .25m. What is the energy stored in the capacitor
A 10000 N car comes to a bridge during a storm and finds the bridge washed out. The 750N driver must get to the other side, What is the speed of the car just before it lands safely on the other side
A crate is dragged across a rough floor by a force of 120N asz` shown below. A friction force of 40N acts to slow the motion of the crate. what is the net work done
A mass-spring system undergoes simple harmonic motion with amplitude A. What fraction of the system's energy is kinetic energy when the object's position is x=A/2
John can hit a golf ball 310m on earth. on the moon's surface, g=1/6 gravity of earth, so how far could he hit the same ball if he could only achieve half an initial velocity achieved on earth.
A 2.1-m-tall, 90-cm-diameter concrete column supports a 4.0×10^5kg load. By how much is the column compressed
a a wire 1 m long is perpendicular to a magnetic field of 0.01 t. what is the force on the wire when it carries a
Water at 20.7°C is sprayed onto 0.193 kg of molten gold at 1063°C (its melting point). What is the minimum mass of water that must be used
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