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Lesechka [4]
2 years ago
11

A scientist told his student assistants that he had sorted groups of mice by their intelligence and asked the assistants to asse

ss the groups’ maze-solving abilities. The scientist had not actually sorted the mice by intelligence. The students rated the “highest intelligence” group of mice as the best maze solvers and the “lowest intelligence” group as the worst maze solvers. What was the scientist trying to demonstrate by doing this experiment?
Experimental subjects should never be put into groups.
Mice should not be judged by their intelligence.
Higher intelligence mice are better maze solvers.
People can introduce their own biases into an experiment.
Physics
2 answers:
Yanka [14]2 years ago
6 0

Answer:

d

Explanation:

VikaD [51]2 years ago
3 0
The right answer for the question that is being asked and shown above is that: "People can introduce their own biases into an experiment."  the scientist trying to demonstrate by doing this experiment is that People can introduce their own biases into an experiment.<span>
</span>
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A pilot can withstand an acceleration of up to 9g, which is about 88 m/s2, before blacking out. What is the acceleration experie
sweet-ann [11.9K]

Answer:

Acceleration, a=97.67\ m/s^2

Explanation:

Given that,

Speed of pilot, v = 475 m/s

Radius of the circle, r = 2310 m

If the pilot is moving in a circular path, it will experience a centripetal acceleration. It is given by the formula as :

a=\dfrac{v^2}{r}

a=\dfrac{(475\ m/s)^2}{2310\ m}

a=97.67\ m/s^2

So, the acceleration experienced by a pilot flying in a circle is 97.67\ m/s^2. Hence, this is the required solution.

8 0
3 years ago
What is the equation of the line that is perpendicular to y= -4x +5 and passes through the point (4,-3)?
Ostrovityanka [42]
Y=4x-19

Perpendicular because it has an opposite reciprocal slope
5 0
3 years ago
Compare an Earth year to a cosmic year
sweet-ann [11.9K]
Compared with an Earth year, a galactic year represents time on a grand scale but its not a consistent measurement across the galaxy
4 0
2 years ago
A typical laboratory centrifuge rotates at 3700 rpm . Test tubes have to be placed into a centrifuge very carefully because of t
Alexus [3.1K]

Answer:

Explanation:

acceleration of test tube

= ω² R

= (2πn)² R

= 4π²n²R

n = no of rotation per second

= 3700 / 60

= 61.67

R = .10 m

acceleration

= 4π²n²R

= 4 x 3.14² x 61.67² x .10

= 14999 N Approx

3 0
3 years ago
A person weighing 0.9 kN rides in an elevator that has a downward acceleration of 1.9 m/s^2. The acceleration of gravity is 9.8
Keith_Richards [23]

Answer:

The magnitude of the force is 0.7255kN

Explanation:

The elevator floor acts on the person with a force that is due to the gravitational acceleration less the downward acceleration of the elevator:

(force of floor F) = (mass of person m) x [ (grav. acceleration g) - (elevator acceleration a) ]

in other words, considering the elevator floor as a reference frame in the Earth's gravitational field, the person's weight decreases due to the downward acceleration, as follows:

F = m\cdot(g-a)

We are given the person's weight at rest, 0.9kN, from which the mass can be determined as:

900 N = m\cdot g \implies m = \frac{900N}{9.8 \frac{m}{s^2}}

So

F = \frac{900N}{9.8 \frac{m}{s^2}}\cdot(9.8-1.9)\frac{m}{s^2}\approx 725.5N=0.7255kN

3 0
2 years ago
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