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The average speed of a Greyhound bus from Lansing to Detroit is 117.5 km/h. On the return trip from Detroit to Lansing the average speed is 56.2 km/h on the same road due to heavy traffic. What is the average speed of the bus for the round trip?
What is the arithmetic mean of the two speeds above?
What is the harmonic mean of the two speeds above?
Calculate the energy of the electron in the ground state of triple ionized beryllium, which has an atomic number Z = 4
A cart is moving horizontally along a straight line with constant speed of 30 m/s. At what speed(relative to the cart), and angle must the projectile be fired
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. Assume you begin with 1.0 grams of the thallium isotope, what mass of the isotope will be left after 9.3 minutes have elapsed?
Two large, parallel, conducting plates are 18 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 4.1x10-15 Nacts on an electron placed anywhere among the two plates.(Neglect fringing.)
An airplane traveling at half the speed of sound emits a sound of frequency 5.96 kHz. At what frequency does a stationary listener hear the sound as the plane approaches
charge is uniformly distributed along a thin stick laid on the x-axis. the stick extends from x0 to xb and has charge
A fan is spinning at 900 rpm. When its motor is turned off it makes 75 rev before coming to a stop. Find the moment of Inertia of the fan
a 3.80 muf capacitor that is initially uncharged is connected in series with a 7.60 k ohm resistor and an emf source
A certain transverse wave is described by y(x,t)=Bcos[2pi(x/L - t/T)], where B= 6.80mm , L= 30.0cm , and T= 3.30×10^-2s. Determine the wave's speed of propagation
Consider a non-ideal springthat exerts a force F(x)=-15.0 N/m x +3.00 N/m^2 x^2 , when it isdisplaced a distance x from its equilibrium length. Thedisplacement x is positive if the spring is stretched andnegative if the spring is compressed.
On a winter day heat leaks out of a house at the rate of 2.5x10^4 kcal/h. At what rate does this process produce entropy
Consider a simple cubic crystal structure with a cube edge a= 3.5x10^-10 m and suppose it is used to scatter 3.10x^-10 m x-rays, Find the Bragg angle theta
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