Two packages are connected by a very light string that goes over an ideal pulley as shown in the figure. Package A has a mass of 3.0 kg and can slide along a rough plane inclined at 30° above the horizontal. The string acts on package A parallel to the surface of the plane. The coefficient of static friction between package A and the plane is 0.40. What minimum mass should package B have in order to start package A sliding up the ramp? (Write your answer only in numbers – no units)

A 40-kg crate is being lowered with a downward acceleration is 2.0 m/s2 by means of a rope. (a) What is the magnitude of the force exerted by the rope on the crate? (b) What would be the magnitude of the force exerted by the rope if the crate were being raised with an acceleration of 2.0 m/s2?

A ball is thrown downward from the top of a building with an initial speed of 25 m/s.  It strikes the ground after 2.0 s.  How high is the building, assuming negligible air resistance?

A cart moves up a inclined frictionless track. Which of the following statements is correct?

The metric pre-fix for one-thousandth is

Yo __________________ dinero a las personas para que instalaran paneles solares en sus casas.

Yo __________________ a las personas a usar transporte público.

I can take a proctored exam at any San Jacinto College testing center.

1) The label on a certain small appliance states that the appliance carries a current of 5.0 A when connected to a source of 120 V. What is the resistance of the appliance? (5 points)   2) Consider the circuit shown below. Calculate the equivalent (total) resistance of the circuit. (5 points) 3) A  battery with a 18 V emf and an internal resistance of 0.050 Ohms provides a current of 25 A to a circuit. Calculate the terminal voltage of the battery. (5 points)   4) A series RLC AC circuit has resistance R = 650 Ohms, inductance L = 0.900 H, capacitance C = 7.50 micro Farad, frequency f = 60.0 Hz, and Vmax = 150 V. Find the total impedance of the circuit.(5 points)

A traveler is being evaluated at a local hospital for gastrointestinal pain, fever, and diarrhea. The patient has recently returned from a month-long visit to Southeast Asia. The patient has no recent history of sexual activity or IV drug use but did describe conditions of poor sanitation where they were visiting. If liver function test results were elevated and bilirubinuria was noted, which of the following would be the next logical test to order?