1. The tennis coach at Kingston High
School wants to videotape his varsity
players to evaluat...
![Physics](/tpl/images/cats/fizika.png)
1. The tennis coach at Kingston High
School wants to videotape his varsity
players to evaluate their form when
serving the ball. He is concerned that
the presence of the video recorder
will make some of the players
nervous and affect their service form.
He decides to conduct an experiment
and randomly chooses half of his
players to be videotaped and the
remaining half not to be taped. Then
he will see if having a video camera
on the court affects his players by
noting what percentage of serves by
players in both treatment groups are
successful.
The control variable in his proposed
experiment is the:
Answer choices:
serving percentage.
video recording.
varsity players.
nervousness
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:30, salehabajwa101
What are the similarities & differences between a thermistor and a light dependent resistor in physics?
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 19:30, sierranowe2003
Juliette sets the initial velocity to +10 m/s, the acceleration to zero, and clicks “start.” how can shakina describe the subsequent motion of the car juliette controls?
Answers: 3
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 20:10, JayLiz1737
On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 22:00, ronalescobar2002
A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?
Answers: 2
Do you know the correct answer?
Questions in other subjects:
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.03.2020 21:01
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.03.2020 21:01
![Konu](/tpl/images/cats/fizika.png)
Physics, 24.03.2020 21:01
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 24.03.2020 21:01
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.03.2020 21:01
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.03.2020 21:01