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3 years ago

7

A 150-kg object takes 1.5 minutes to travel a 2,500- meter straight path. It begins the trip traveling 120 m/s and decelerates t

o a velocity of 20 m/s . What is the acceleration?

1 answer:

lana [24]3 years ago

4 0

The answer is it is -1.11 m/s^2.

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A student is considering doing a complete repeated measures design experiment involving motor skills. The student's advisor has

Lelu [443]

Answer:

<em>c. ABBA counterbalancing </em>

Explanation:

The student should not use the method because it is a progressive error management technique for each subject by introducing all <em>treatment circumstances twice, first in one sequence, then in the other (AB, BA) by subject counterbalancing.</em>

If participants experience conditions more than once, they experience the conditions first in one order, then the opposite order.

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3 years ago

The periodic table is an arrangment of the chemical elements, ordered by atomic number, into families, and by doing so illustrat

Gala2k [10]

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Solid at room temperature

Explanation

Since these elements are metals they must be said at room temperature

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2 years ago

The maximum gauge pressure in a hydraulic lift is 18.0 atm what is the largest size vehicle

victus00 [196]

There is a missing part in the question. Found the complete text on internet:
"<span>What is the largest size vehicle (kg) it can lift if the diameter of the output line is 28.0 cm? "

Solution
The diameter of the piston is 28.0 cm, this means its radius is 14.0 cm (half the diameter), so the area of the piston is
</span> $A=\pi r^2 = \pi (0.14 m)^2 =6.15 \cdot 10^{-2} m^2$
<span>
The maximum pressure of the lift is
</span> $p=18.0 atm = 1.82 \cdot 10^6 Pa$
<span>
Therefore the maximum force the piston can lift is
</span> $F=pA=(1.82 \cdot 10^6 Pa)(6.15 \cdot 10^{-2} m^2)=1.12 \cdot 10^5 N$
<span>
And the size (the mass) of the vehicle is
</span> $m= \frac{F}{g}= \frac{1.12 \cdot 10^5 Pa}{9.81 m/s^2} =1.14 \cdot 10^4 kg$ <span>
</span>

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3 years ago

The voltage in a circuit is given by the equation V = IR . In this equation , Vis the voltage, the current, and Ris the resistan

Mumz [18]

Answer:

The choice D.

$R = \frac{v}{I}$

I hope I helped you^_^

8 0

2 years ago

A toy car has a momentum of 3 kilogram meters per second south. The car has a 1-kilogram mass. Which is the velocity of the car?

antiseptic1488 [7]

Using p = mv 3 = 1× v v = 3m/s

6 0

3 years ago