What is the KE of a 4 kg rock rolling at 10 m/s? KE = 1/2 mv2 O 160 J
O 2003
O 40 J
O 400 J

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit