• ### PHYSICS COMBINED CIRCUIT PROBLEMS?? 10 POINTS?

resistor a= 100 ohms resistor b= 150 ohms resistor c = 220 ohms resistor d=470 ohms resistor e= 330 ohms resistor f= 175 ohms there are 3 different circuits and idk how find the voltage and current current is supposed to be in amps and E is the hardest to solve! i always get weird answers
30 mins ago
• Edit
• We are experiencing some problems, please try again.
• ### 1.4 eV electron has a 10-4 probability of tunneling through a 2.5 eV barrier.What is the prob a 1.4 eV proton going through the same barrier?

57 mins ago
• Edit
• We are experiencing some problems, please try again.
• ### HOW TO SOLVE COMBINED SYSTEMS?? HELP! TEN POINTS?

resistor a= 100 ohms resistor b= 150 ohms resistor c = 220 ohms resistor d=470 ohms resistor e= 330 ohms resistor f= 175 ohms there are 3 different circuits and idk how find the voltage and current everytime i try to solve i get skewed answers
1 hour ago
• Edit
• We are experiencing some problems, please try again.
• ### Physics Help please due today!!!!!!?

A 69.9 kg ice skater moving to the right with a velocity of 2.34 m/s throws a 0.153 kg snowball to the right with a velocity of 30.8 m/s relative to the ground. What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and the ice. Answer in units of m/s. A second skater initially at rest with a... show more
1 hour ago
• Edit
• We are experiencing some problems, please try again.
• ### Help with Physics Question?

A 60.7 kg astronaut is on a space walk when the tether line to the shuttle breaks. The astronaut is able to throw a 12.0 kg oxygen tank in a direction away from the shuttle with a speed of 13.4 m/s, propelling the astronaut back to the shuttle. Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the... show more
1 hour ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.
• ### PHYSICS HELP!!?

1. Which of the following statements about EMF (electromotive force) is false? A. EMF is the ideal voltage across the terminal of a battery. B. EMF is typically lower than the terminal voltage. C. A 1.5 volt battery has an EMF of 1.5 volts D. EMF is a force I think it is B. Is this correct? 2. Which statement is false? A. Bodies have natural... show more
2 hours ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.

A balistic pendulum is made from a block of wood with a mass of 3.23 kg. A bullet with a mass of 33.5 g is shot into the block causing it to rise 23 cm.
2 hours ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.
• ### Physics question HELP!!?

A mass m = 17 kg is pulled along a horizontal floor with NO friction for a distance d =5.4 m. Then the mass is pulled up an incline that makes an angle θ = 32° with the horizontal and has a coefficient of kinetic friction μk = 0.36. The entire time the massless rope used to pull the block is pulled parallel to the incline at an angle of θ = 32°... show more
2 hours ago
• Edit
• We are experiencing some problems, please try again.

2 hours ago
• Edit
• We are experiencing some problems, please try again.
• ### AM I SOLVING THESE SERIES AND PARALLEL CIRCUITS CORRECT? EASY 10 POINTS?

CIRCUIT A Resistor A = 120 Resistor B= 150 Resistor C = 220 current for a: 9/490=0.018A voltage for a: 9v current for b: 9/490=0.018A voltage for b: 9v current for c: 9/490=0.018A voltage for c: 9v circuit b: resistor d=470 resistor e=220 current for d: 0.019A voltage for d: 9v current for e: 0.041A voltage for e: 9v circuit c: resistor b:... show more
2 hours ago
• Edit
• We are experiencing some problems, please try again.
• ### A mass m = 7.6 kg hangs on the end of a massless rope L = 1.84 m long. The pendulum is held horizontal and released from rest ?!?

A mass m = 7.6 kg hangs on the end of a massless rope L = 1.84 m long. The pendulum is held horizontal and released from rest. 1) How fast is the mass moving at the bottom of its path? 2) What is the magnitude of the tension in the string at the bottom of the path? 3) If the maximum tension the string can take without breaking is Tmax = 629... show more
2 hours ago
• Edit
• We are experiencing some problems, please try again.
• ### PHYSICS HELP!! 10 points :)?

two charges are on a straight line separated by 0.226 meters. charge a is +8.5 * 10^-9C AND charge b is -5.5 * 10^-9 C. point p is located halfway between charges a & b. 1. what's the magnitude of the field created by charge a? a. 5991 n/c b. 8962 n/c c. 2734 n/c d. 3984 n/c e. none is the answer b? 2. what's the direction of the sign... show more
3 hours ago
• Edit
• We are experiencing some problems, please try again.
• ### Physics Question?

A letter A is formed from two uniform pieces of metal each of weight 15.2 N and length 1.44 m, hinged at the top and held together by a horizontal wire of length 1.2 m. The structure rests on a frictionless surface. If the wire is connected at points a distance of 1.01 m from the top of the letter, determine the tension in the wire. Answer in units... show more
3 hours ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.
• ### Physics Question?

The bars are in equilibrium, each 5 m long, and each weighing 94 N. The string pulling down on the two bars is attached 0.4 m from the fulcrum on the leftmost bar and 0.3 m from the left end of the rightmost bar. The spring (of constant 22 N/cm) is attached at an angle 30◦ at the left end of the upper bar. If the suspended mass is 3 kg, by how... show more
3 hours ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.
• ### Physics Question?

A 20.4 kg person climbs up a uniform 133 N ladder. The upper end of the ladder rests on a frictionless wall. The bottom of the ladder rests on a floor with a rough surface. The angle between the horizontal and the ladder is 42 ◦ . The person can climb 24 percent up the ladder before the base of the ladder slips on the floor. What is the coefficient... show more
3 hours ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.
• ### PHYSICS HW HELP?? 10 POINTS PLEASE?

1. Which of the following statements about EMF (electromotive force) is false? A. EMF is the ideal voltage across the terminal of a battery. B. EMF is typically lower than the terminal voltage. C. A 1.5 volt battery has an EMF of 1.5 volts D. EMF is a force I think it is B. Is this correct? 2. Which statement is false? A. Bodies have natural... show more
3 hours ago
• Edit
• We are experiencing some problems, please try again.
• ### Can someone help me with this one?

The figure shows a closed surface that has a line integral of the magnetic field of 1.00×10-6 Tm. If I1 = 17.0 A, I2 = 12.0 A and I4 = 20.0 A, what is the current flowing through I3?
3 hours ago
Be the first one to answer
• Edit
• We are experiencing some problems, please try again.

You lift a book of mass m with your hand in such a way that it moves up at constant speed a distance Δ r . While it is moving, what is the net work done on the book?
3 hours ago
• Edit
• We are experiencing some problems, please try again.
• ### A shopper pushes a grocery cart at 19.0m at constant speed on level ground?

against a 30.0N frictional force. He pushes in a direction 28.5degrees below the horizontal. a) What is the work (in J) done on the cart by friction? b) What is the work (in J) done on the cart by the gravitational force? c) What is the work (in J) done on the cart by the shopper? d) Find the force the shopper exerts (in N), using energy... show more
3 hours ago