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Usimov [2.4K]
3 years ago
15

What is a race car's

Physics
1 answer:
SpyIntel [72]3 years ago
4 0

Answer:

50

Explanation:

500/10 = 50

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If the coefficient of static friction is 0.40, and the same ladder makes a 51° angle with respect to the horizontal, how far alo
inysia [295]

To solve this problem, we apply the concepts related to the sum of forces and balance in a diagram that will be attached, in order to identify the behavior, direction and sense of the forces. The objective is to find an expression that is in terms of the mass, the angle, the coefficient of friction and the length that allows us to identify when the ladder begins to slip. For equilibrium of the ladder we have,

\sum F_x = 0

\sum F_y = 0

\sum M_o = 0

Now we have that

f_1 = N_2

N_1 = mg

And for equilibrium of the two forces we have finally

mgdcos\theta = N_2lsin\theta

Rearranging to find the distance,

d = \frac{N_2}{mg}ltan\theta

d = \frac{f_1}{mg}ltan\theta

So if we have that the frictional force is equivalent to

f_1 = \mu N_1

f_1 = \mu mg

f_1 = (0.4)(57*9.8)

f_1 = 223.44N

With this value we have that

d = \frac{(0.4)(57)(9.8)}{57*9.8}(7.5) tan(60\°)

d = 5.19m

Therefore can go around to 5.19m before the ladder begins to slip.

5 0
3 years ago
the pitch that the average human can hear has a frequency of 20.0. If sound with this frequency travels through air with the spe
Natalka [10]

There are problems with the first sentence, and it's not really needed when
working with this question.  So let's just take the 20 (Hz ?) frequency from
the first sentence, and ignore the rest of it for right now.

           Wavelength = (speed) / (frequency) =

                                   (331 m/s) / (20 Hz) = <em>16.55 meters</em>.


8 0
3 years ago
A 2500-N net force acting on a 880-kg car accelerates it at a rate of ______ m/s/s
Bond [772]

Answer:

a = 2.84 m/s²

Explanation:

Given that,

Net force, F = 2500 N

Mass of the car, m = 880 kg

We need to find the acceleration of the car. Net force is given by :

F = ma

a=\dfrac{F}{m}\\\\a=\dfrac{2500\ N}{880\ m/s^2}\\\\a=2.84\ m/s^2

So, the acceleration of the car is 2.84 m/s².

8 0
3 years ago
Suppose all of the apples have a mass of 0.10 kg and one of the apples in the bowl (C) is 1.0 meter off the ground. If the apple
sesenic [268]
The answer is 0.981 J

E = m · g · h<span>
E - energy
m - mass
g - gravitational acceleration
h - height

We know:
E = ?
m = 0.10 kg
g = 9.81 m/s</span>²
h = 1 m

E = 0.10 kg * 9.81 m/s² * 1 m = 0.981 J
6 0
3 years ago
Read 2 more answers
Electromagnetism consists of what two processes?
kherson [118]

Answer: it’s A and B

Explanation: everyone else on this post was giving you the wrong answer.

5 0
3 years ago
Read 2 more answers
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