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Resistor R1=10.0 Ohm is connected in parallel to a series combination of R2=4.0 Ohm and R3=4.0 Ohm. The combination of three resistors is connected to a real battery of emf of 12.0 V. Find internal resistance of a battery if current through resistor R2 is 0.30 A. Give answer in Ohms.
An electron has an initial velocity of 2.00 106 m/s in a uniform 5.00 105 N/C strength electric field. How far does the electron travel before coming to rest
A 3800 kg car travels round an unbanked corner(i.e. a horizontal road) at the recommended speed of 65 km h-1. What forces would the road need to exert if the car was traveling at 100 km h-1
Let's say you light your basement continuously with a 100 W ordinary incandescent light that has an effectiveness of 10 lumens/W. How much energy is added to your basement in a 24 hour period
A very light rigid rod with a length of 0.692 m extends straight out from one end of a meter stick. Determine the period of oscillation of the system
Take two containers, each with volume 0.1 m3, containing ideal gases of monatomic He at T= 118 K and diatomic N2 at T = 257 K, respectively. Each gas is at pressure p= 106 Pa. A valve is opened allowing these two gases to mix. They are kept th..
Calculate how much current is required to make the field at the center of a current loop comparable to the magnetic field near one of the poles of a permanent magnet
Explain how the electric potential energy of a particle can increase
The density of a 2.69-m long rod can be described by the linear density function ?(x) = 109 g/m + 11.3x g/m2. Determine the total mass of the rod
A block of mass 1.7kg is in a spring (k= 250N/m^2) compressed 3.0m. The spring is frictionless, but friction exists past the equilibrium point. What is the initial mechanical energy of the system
the drawing shows a square each side of which has a length of l 0.25 m. two different positive charges q1 and q2 are
an elephant can runat a steady speed of 10m/sec and can stop in 2.5 sec what is the average acceleration of the elephant while stopping
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200 m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases ..
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