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4 years ago

What is a big five trait

Physics

1 answer:

almond37 [142]4 years ago

8 0

Answer:

Big 5 Traits are openness conscientiousness, extraversion, agreeableness, and neuroticism.

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A 1000 kg car is rolling slowly across a level surface at 1m/s, heading toward a group of small innocent children.

Ne4ueva [31]

Answer:

The force is -1620.73 N.

Explanation:

Given that,

Mass of car = 1000 kg

Velocity = 1 m/s

Distance = 2 m

Angle = 30°

We need to calculate the force

Using formula of work done

$W_{net}=K_{f}-K_{i}$

$F\times d=K_{f}-K_{i}$

$Fd\cos\theta=-K_{i}$

$F=\dfrac{-K_{f}}{d\cos\theta}$

$F=-\dfrac{\dfrac{1}{2}mv^2}{d\cos\theta}$

Put the value into the formula

$F=-\dfrac{\dfrac{1}{2}\times1000\times(1)^2}{2\times\cos30}$

$F=-1620.73\ N$

Hence, The force is -1620.73 N.

7 0

4 years ago

Read 2 more answers

A 2.0 mass has j of kinetic energy What is the speed?

Ad libitum [116K]

Answer:

v= 4.8 m/s

Explanation:

m= 2.0

KE= 1/2 mv^2

v= ?

v= 1/2 (2.0)^2

v= 4.8 m/s

3 0

3 years ago

Two identical cans, one filled with lead shot and the other with feathers, are dropped from the same height by a student standin

Serga [27]

Answer:

The lead shot-filled can experiences a greater force due to gravity because it contains more mass.

Explanation:

The gravitational attractive force that acts on two different bodies on Earth depends on the body's masses. The greater the mass, the stronger the force of gravity acts on the body. The smaller the mass, the weaker the force of gravity acts on the body.

The can with the lead shot in it has a greater mass than that of the can that is filled with feathers. Therefore, the can with the lead shot will experience a greater force due to gravitational attraction of the Earth than that of the can that is filled with feathers.

5 0

3 years ago

If a rock falls for 5 seconds near the surface of the earth and with no air friction, it will reach a velocity of

sukhopar [10]

Answer: -49m/s.

Explanation:

As the rock only falls, we will assume that the initial vertical velocity is zero.

We neglect the air friction, so the only force acting on the rock is the gravitational force, this means that the acceleration is -g = -9.8m/s^2.

Then we can write:

a(t) = -9.8m/s^2

To write the velocity of the rock, we must ingrate over time and get:

v(t) = (-9.8m/s^2)*t + v0

where v0 is the initial vertical velocity, and as we said above, v0 = 0m/s

Then the vertical velocity as a function of time is:

v(t) = (-9.8m/s^2)*t

Now, the question is:

"...If a rock falls for 5 seconds near the surface of the earth and with no air friction, it will reach a velocity of..."

Then we need to evaluate the velocity equation in t = 5 seconds.

v(5s) = (-9.8m/s^2)*5s = -49m/s.

3 0

3 years ago

ichrome wire of cross-sectional radius 0.791 mm is to be used in winding a heating coil. If the coil must carry a current of 9.2

77julia77 [94]

Answer:

length is 23.228091 m

Explanation:

Given data

radius = 0.791 mm = 0.791 × $10^{-3}$ m

current = 9.25 A

voltage = 1.20 × 10² V

to find out

resistance and length of wire

solution

we know the resistance formula that is

resistance = voltage / current

resistance = 1.20 × 10² /9.25

resistance = 12.97

so resistance is 12.97 ohm

and length of nichrome wire formula is

length = resistance × area / specific resistance of wire

so specific resistance of wire we know = 1.1 × $10^{-6}$

and area = $\pi$ × r² = $\pi$ × (0.0791× $10^{-3}$ )²

area = 1.97 × $10^{-6}$

length = 12.97 × 1.97 × $10^{-6}$ / 1.1 × $10^{-6}$

so length is 23.228091 m

6 0

3 years ago