Samantha is playing kickball with her friends during recess. The ball, which has a mass of 2.3 kg, is rolling towards Samantha with a velocity of -10 m/s. She kicks the ball directly
back towards the pitcher with a velocity of +28 m/s. The ball is in contact with
Samantha's foot for .002 s. Calculate the impulse Samantha delivered to the ball when
she kicked it.

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?