10) A test charge, q₁ = -5 × 10-8C, is placed in an electric field and experiences a force of 2.0 x 10-10N [S]. a) What is the electric field intensity at the location of the positive test charge? b) Predict the force that would result on the test charge if q₁ was replaced by a charge of q₂ = 6 x 10-7C.

Determine the distance h for which the spacecraft S will experience equal attractions from the earth and from the sun. Use Table D/2 of Appendix D as needed. Assume L = 210 000 km. Sun Earth Answer: h= i Not to scale (105) km

Answer no.1

A jet plane travels towards a ground-based radar dish. Radar locates the jet plane at a distance D = 11 km from the dish, at an angle θ = 46° above horizontal. 1.) What is the jet plane’s horizontal distance, DH in meters, from the radar dish? 2.)What is the jet plane's vertical distance, DV in meters, above the radar dish? 3.)Write an expression for the distance vector, D, in rectangular form in terms of D and θ, in a coordinate system with the dish at the origin and the unit vectors i and j in the horizontal and vertical directions. (to the right and up)