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damaskus [11]
3 years ago
14

A(n) ? can be used to represent the direction and strength of a force

Physics
2 answers:
ExtremeBDS [4]3 years ago
6 0
Units of force are the newton pound.
dsp733 years ago
6 0
Units of force are the newton pound.
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Andy (mass 80.0 kg), Randy (mass 60.0 kg), and twins Candy and Mandy (each with a mass of 70.0 kg) climb into a 1000.-kg car, ca
PolarNik [594]

To solve this problem we will apply the relationship between Newton's second law and Hooke's law, with which we will define the balance of the system. From the only unknown in that equation that will be the constant of the spring, we will proceed to find the period of vibration of the car.

We know from Hooke's law that the force in a spring is defined as

F = kx

Here k is the spring constant and x the displacement

While by Newton's second law we have that the Weight can be defined as

F = mg

Here m is the mass and g the gravity acceleration.

The total weight would be

F = (80+60+70)(9.8)

F = 2058 N

Each spring takes a quarter of the weight, then

F_s = \frac{2058}{4} = 514.5N

Since the system is in equilibrium the force produced by the weight in each spring must be equivalent to the force of the spring, that is to say

F_s = F

\frac{1}{4} mg = kx

514.5N = k(0.04)

k = 12862.5kg \cdot m/s^2

The period of a spring-mass system is given as

T = 2\pi \sqrt{\frac{M}{4k}}

The total mass is equivalent as the sum of all the weights, then replacing we have that the Period is

T = 2\pi \sqrt{\frac{1000+80+60+70}{4( 12862.5)}}

T = 0.9635s

Therefore the period of vibration of the car as it comes to rest after the four get in is 0.9635s

6 0
3 years ago
Please help! 100 points + 50 + brainlist!!!
irakobra [83]

Explanation:

First find the displacement in the x direction:

dₓ = 449 cos 66° + 1112 cos 169° + 1571 cos 26°

dₓ = 182.6 − 1091.6 + 1412

dₓ = 503 km

Next, find the displacement in the y direction:

dᵧ = 449 sin 66° + 1112 sin 169° + 1571 sin 26°

dᵧ = 410.2 + 212.2 + 688.7

dᵧ = 1311 km

The magnitude is:

d² = dₓ² + dᵧ²

d² = (503)² + (1311)²

d = 1404 km

The angle is:

tan θ = dᵧ / dₓ

tan θ = 1311 / 503

tan θ = 2.61

θ = 69°

1404 km and 69° north of east from New Orleans is approximately Toledo.

4 0
3 years ago
Read 2 more answers
A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 44 m/s at an angle of 25° above the horizo
mars1129 [50]

Answer:

a) y=17.6m

b) v_{x}=39.87m/s\\v_{y}=-28.05m/s

Explanation:

From the exercise we got our <u>initial data</u>

v_{o}=44m/s\\\beta =25\\x=190m

a) To find <u><em>maximum height</em></u> we know that at that point v_{y}=0

v_{y} ^{2} =v_{oy} ^{2} +2a(y-y_{o} )

0=(44sin25)^{2} -2(9.8)y

Solving for y

y=\frac{(44sin25)^{2} }{2(9.8)} =17.6 m/s

b) Since we know that the ball strikes the fairway 190 m away

x=v_{ox}t\\ 190=44cos25t

Solving for t

t=4.76s

Now, we can calculate the speed of the ball in both axes

v_{x}=44cos25=39.87m/s

v_{y}=v_{oy}+at

v_{y}=44sin25-(9.8)(4.76)=-28.05m/s

The <em>negative</em> sign means the direction of the ball at that point.

5 0
4 years ago
In a stadium, fans stand up and sit down to produce a wave across the stadium. This type of wave where the material travels perp
puteri [66]
Correct option B

Transverse waves are those waves whose particles vibrate perpendicular to the direction of wave.

Hope This Helps You!
3 0
3 years ago
Read 2 more answers
The term time dilation refers to which effect?
RoseWind [281]
Is the apparent loss of time of a moving clock as observed by a stationary observer. Thats what i think.
6 0
4 years ago
Read 2 more answers
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