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When the spring is compressed 4.0 cm from its relaxed length, the block is released. The block slides across a horizontal frictionless surface and collides elastically with another block (5.0 kg) th
In nature, the horizontal gene transfer across bacteria is mediated by (A) gene cloning followed by transformation (B)conjugation and transformation (C) conjugation only (D) transformation only
Hanging wire has a length of 1.90m . When a steel ball of mass 51.0 kg is suspended from the wire, the wire stretches by 1.50 mm . If the ball is pulled down a small additional distance and released
Consider a neutron star whose mass is twice the mass of the Sun and whose radius is 12.3 km. If it rotates with a period of 3.03 s, what is the speed of a point on the Equator of this star?
The numerical value of the angular velocity of rotation of the earth should be _____ rad/s in order to make the effective acceleration due to gravity at the equator equal to zero.
String 1 is attached to the end of the bar, and string 2 is attached a distance 0.65m from the other end. A monkey of mass 1kg walks from one end of the bar to the other. Find the tension T1 in stri
What is the center of gravity? How can you find it in various objects? How dooes it effect the equilibrium of an object? What is stability? What are the types of stability? What effect does stabilit
An electron with a kinetic energy of 10eV is moving from left to right along the x-axis. The potential energy is V=0 for x<0 and V=20eV for x>0. Treat the elctron as a one-dimensional plane w
An electron with a kinetic energy of 10eV is moving from left to right along the x-axis. The potential energy is V=0 for x<0 and V=20eV for x>0. Treat the elctron as a one-dimensional plane wa
By the time he reaches the top, the box is now at a height of 1.35m from the ground. What is the box's potential energy?
Two equal resistances are connected in the gaps of a meter bridge. If the resistance in the left gap is increased by 10%, by what percent does the balance-point shift (and in which direction) ?
Two cylindrical rods, one of stainless steel and the other of red brass, are joined at C and restrained by rigid supports at A and E. Determine the reactions at A and E and the deflection of point C
A car is traveling on a straight road. The maximum velocity that can be attained by the car is 24 m/s. The maximum acceleration and decceleration it can attain is 1 m/s^2 and 4 m/s^2 respectively. F
The density of water is 1000 kg/m^3. What is the pressure of the water on the fourth floor? Show work for first and best rating.
A flywheel turns through 36 rev as it slows from an angular speed of 1.6 rad/s to a stop. (a) Assuming a constant angular acceleration, find the time for it to come to rest.
Find the change in the height of the mercury plum for the temp change of 20C. The volume expansion coefficient of mercury is 0.000182 C^ -1
If a 43 m steel bridge experiences extreme temp between -11c and 44C what is the range in size of this bridge if it measures exactly 43m at 21C. Steel has a coefficient of of linear expansion of 1.
A coil of Nichrome wire (p=1.56x10-6 ohm*m) is 3.0 m long. The radius of the wire is r=.25mm. If the wire carries current I=10.0A, what is the: a) resistance b) voltage across the coil
The system is under both mechanical and thermal equilibrium. Calculate the entropy and Gibbs energy of mixing when the patrition is removed, Assume that the gases are perfect.
Construct the phase diagram for benzene near its triple point at 36 torr and 5.5 Celcius using the following data: Hfusion=10.6 kJ/mol, Hvaporization = 30.8 Kj/mol, density(s) = 0.891 g/mL, density(
The molar volume of a certain solid is 142 mL at 1 bar and 427.15K, its melting temperature. The molar volume of the liquid at this temperature and pressure is 152.6mL/mol. At 1.2 MPa, the melting t
A 0.157 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s. It has a head-on collision with a 0.304 kg glider that is moving to the left with a speed
The CM of an empty 1250 kg car is 2.30 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.65mm from the front of the car, and t
A 2060 kg railroad flat car, which can move with negligible friction, is motionless next to a platform. A 240 kg sumo wrestler runs at 5.3 m/s along the platform (parallel to the track) and then ju