I need help in these 2 questions please

Anonymous
account_balance_wallet \$10

Question Description

I need help please with these 2 questions I tried three times but still stuck on them!

Q1) A charge of -2.90 nC is placed at the origin of an xy-coordinate system, and a charge of 1.85 nC is placed on the y axis at y = 3.95 cm .

Part A

If a third charge, of 5.00 nC , is now placed at the point x = 2.55 cm , y = 3.95 cm find the x and y components of the total force exerted on this charge by the other two charges.

Express answers numerically separated by a comma

Part B

Find the magnitude of this force.

Part C

Find the direction of this force.

Q2) A refrigerator has a coefficient of performance of 2.25, runs on an input of 135 W of electrical power, and keeps its inside compartment at 5C.

Part A

If you put a dozen 1.0-L plastic bottles of water at 31C into this refrigerator, how long will it take for them to be cooled down to 5C?(Ignore any heat that leaves the plastic.)

t=............... min

School: Boston College

flag Report DMCA
Review

Anonymous
Thanks, good work

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors