Recent content by Brittany King

Ok awesome ill give it a read. Thanks for your help.

Okay thanks got it! We haven't touched on Thevenin Equivalent Circuits, we were just going through a section with series and parallel circuits and learning about the DC current, voltage and resistance measurements with digital voltmeters.

Yup, i'll post a picture of the question and the formulas below

The textbook I got this equation from doesn't have a bracket around (Rs+Rm), the equation is derived from: Er= Vm-Vx/Vx *100% -the percentage relative loading error associated with the measured voltage Vm=Vx(Rm/Rm+Rs) - from voltage divider equation Rs= Source Resistance Rm= Meter Resistance...

Homework Statement For a circuit with 3 resistors in series (R1=1.00 kOhms, R2=2.50 kOhms, R3= 4.00 kOhms and Va=12.0 V). A voltmeter was placed across R2 and R3. Calculate the relative error in the voltage reading if the internal resistance of the voltmeter was a) 5000 ohms, b) 50 kOhms, C)...

1. Homework Statement A convex spherical mirror with a focal length of magnitude 25 cm has a 4.0-cm tall flower placed 100 cm in front of it. What is the height of the image of the flower? a.20 cm b. 1.6 cm c .0.80 cm d. 4.0 cm e. 8.0 cm Homework Equations 1/f=1/do+1/di M=-di/do=hi/ho The...

Homework Statement A mass of 120g rolls down a frictionless hill reaching a speed of 4.2 m/s and collides with another mass 3.00g attached to a spring of constant 30 N/m. The two masses stick together and enter into periodic motion. What is the equation for the motion? Homework Equations...

Oh I got it now! Thanks so much ! :)

To use PE=1/2kx^2 wouldn't I need the x at Is A= 0.014m?

Homework Statement A 0.26-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 190 N/m. The block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest. The block then executes...