All categories

2 years ago

HELP PLSSSSSSS ASPA 20 pointsssss

Physics

2 answers:

FrozenT [24]2 years ago

8 0

Answer:

Hey guess what there's no question genius

Explanation:

Nadusha1986 [10]2 years ago

3 0

Where the question I don’t see it but thanks for the points

You might be interested in

Please help answer question

nika2105 [10]

Answer:

C = 1.01

Explanation:

Given that,

Mass, m = 75 kg

The terminal velocity of the mass, $v_t=60\ m/s$

Area of cross section, $A=0.33\ m^2$

We need to find the drag coefficient. At terminal velocity, the weight is balanced by the drag on the object. So,

R = W

$\dfrac{1}{2}\rho CAv_t^2=mg$

Where

$\rho$ is the density of air = 1.225 kg/m³

C is drag coefficient

So,

$C=\dfrac{2mg}{\rho Av_t^2}\\\\C=\dfrac{2\times 75\times 9.8}{1.225\times 0.33\times (60)^2}\\\\C=1.01$

So, the drag coefficient is 1.01.

4 0

2 years ago

Show the weight of the ladder and draw the missing Frictional force.

madreJ [45]

Since there is no friction between the ladder and the wall, there can be no vertical force component. That's the tricky part ;)

So to find the weight, divide the 100N <em>normal</em> force by earths gravitational acceleration, 9.8m/s^2

$W = \frac{N}{g} = \frac{100N}{9.8m/s^{2}} = \frac{100}{9.8} = 10.2kg$

Then;
Draw an arrow at the base of the ladder pointing towards the wall with a value of 30N, to show the frictional force.

5 0

2 years ago

17.a car is traveling at a constant velocity of 60 km/h for 4 hours means

Setler [38]

<span>Assuming the car is travelling in the same direction for the entire hour, the acceleration is zero.</span>

7 0

2 years ago

A device that converts mechanical energy into electricity is a

IgorLugansk [536]

Answer:

An electric generator is a device that converts a form of energy into electricity.

Explanation:

7 0

2 years ago

What makes a force a vector quantity

klasskru [66]

Answer:

A vector quantity is a quantity that has both magnitude and direction.

Explanation:

3 0

2 years ago