Physics Answers

A = -2î +6ĵ & B = 2î - 3j

A thermometric thermometer reads 3.2 microvolts at the triple point of water. Determine it's reading when placed in a lecture theater of 27°c

The resistance R of "\\theta" is equal to R^o(1+"\\alpha" "\\theta" + "\\beta" "\\theta" ²). Where "\\alpha" =3.8*10³ and "\\beta" = -5.6*10^-7. What temparature will the platinium thermometer indicate when the temparature on the gas scale is 200K

 How much heat must be added to a system at 298 K for the number of accessible states to increase by a factor 

An 18kg object is pulled by a force of 210N, 40° with the horizontal. The coefficient of kinetic friction of the object is given as 0.45. What is the acceleration of the object?

A simple pendulum has a mass of 0.250 kg and a length of 1.00 m. It

is displaced through an angle of 15.0° and then released. What are (a)

the maximum speed, (b) the maximum acceleration, and (c) the

maximum restoring force? What If? Solve this problem by using the

simple harmonic motion model for the motion of the pendulum, and

then solve the problem more precisely by using more general

principles.

.A Christmas ball in a shape of a hollow sphere is hung from the tree by a piece of thread attached to the surface of the ball. The mass and radius of the ball are 0.105kg and 0.12m, respectively. What will be its period of oscillation when slightly displaced from its equilibrium position?

When a gas undergoes a change in temperature but no change in volume, work is done on or by the system.

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A 85-kg swimmer dives horizontally off a 500-kg raft. The diver's speed immediately after leaving the raft is 9.0 m/s. A micro-sensor system attached to the edge of the raft measures the time interval during which the diver applies an impulse to the raft just prior to leaving the raft surface. If the time interval is read as 0.50 s, what is the magnitude of the average horizontal force by diver on the raft?

A 5kg object is hanging by a 1.5m wire when it is suddenly hit by a 3kg missile traveling horizontally at 12m/s. The missile embeds itself in the object during the collision. What is the tension in the rod immediately after the collision?