Question 1: The transference (the movement of) of digital data is considered to be much better than analog signals. Choose the statement below that supports this.
(1 point)
Responses
Digital signals can be amplified just as well as analog signals.
Digital signals can be amplified just as well as analog signals.
Analog signals are an exact copy of the data.
Analog signals are an exact copy of the data.
Digital signals are immune to noise and imperfections because of the nature of these signals.
Digital signals are immune to noise and imperfections because of the nature of these signals.
Analog signals have been used for a much longer time to transmit data.
Digital signals are immune to noise and imperfections because of the nature of these signals.
What is the net force on the box?
10n 20 n
(1 point)
Responses
20 Newtons to the right.
20 Newtons to the right.
10 Newtons to the left.
10 Newtons to the left.
2 Newtons to the left.
2 Newtons to the left.
10 Newtons to the right.
The net force on the box would be 10 Newtons to the right.
Imagine there are two objects floating in space.
If the masses of these objects increase but their distance from each other remains the same, then the force of gravity between the two objects
(1 point)
Responses
remains the same.
remains the same.
decreases.
decreases.
increases.
If the masses of the objects increase but their distance from each other remains the same, then the force of gravity between the two objects increases.
Melissa and Cassidy built the electromagnet pictured above. They coil a copper wire around a bolt and connected the wire to both ends of a battery. When they tested it, it could pick up 3 paper clips. Their teacher challenged all groups to pick up a minimum of 10 paper clips. What could they do to increase the number of paper clips their electromagnet picks up?(1 point)
Responses
increase the number of loops of wire around the nail
increase the number of loops of wire around the nail
make the wire longer
make the wire longer
remove the nail from the center of the wire
remove the nail from the center of the wire
spread the loops of wire apart on the nail so they do not touch
To increase the number of paper clips their electromagnet picks up, they could increase the number of loops of wire around the nail.
Ever pick up a dandelion and blow their seeds through the air? Normally, the wind will grab and deliver the seeds all over the place. This is an adaptation that(1 point)
Responses
allows the dandelion to grow larger.
allows the dandelion to grow larger.
makes sure that no seeds grow very far from the parent plant.
makes sure that no seeds grow very far from the parent plant.
prevents predators from eating the seeds.
prevents predators from eating the seeds.
allows the seeds of dandelions to travel long distances before taking root.