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3 years ago

True or False. Only the initial ball carrier can recover a fumble.

Physics

2 answers:

vovikov84 [41]3 years ago

8 0

Answer:

true

Explanation:

Mrrafil [7]3 years ago

4 0

Answer:

A fumbled ball may be recovered and advanced by either team

hope it helps

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A 1.15-kg mass oscillates according to the equation x = 0.650 cos(8.40t) where x is in meters and t in seconds. Determine (a) th

zheka24 [161]

Answer:

(a) A = 0.650 m

(b) f = 1.3368 Hz

(d) K = 11.8835 J

U = 5.2581 J

Explanation:

Given

m = 1.15 kg

x = 0.650 cos (8.40t)

(a) the amplitude,

A = 0.650 m

(b) the frequency,

if we know that

ω = 2πf = 8.40 ⇒ f = 8.40 / (2π)

⇒ f = 1.3368 Hz

we use the formula

E = m*ω²*A² / 2

⇒ E = (1.15)(8.40)²(0.650)² / 2

⇒ E = 17.1416 J

(d) the kinetic energy and potential energy when x = 0.360 m.

We use the formulas

K = (1/2)*m*ω²*(A² - x²) (the kinetic energy)

and

U = (1/2)*m*ω²*x² (the potential energy)

then

K = (1/2)*(1.15)*(8.40)²*((0.650)² - (0.360)²)

⇒ K = 11.8835 J

U = (1/2)*(1.15)*(8.40)²*(0.360)²

⇒ U = 5.2581 J

4 0

3 years ago

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Contact [7]

The bowling ball will require more force to roll because it is more massive.

3 0

3 years ago

Read 2 more answers

15 points! An atomic nucleus initially moving at 420 m/s emits an alpha particle in the direction of its velocity, and the remai

alexandr1967 [171]

The alpha particle is emitted at 4235 m/s

Explanation:

We can use the law of conservation of momentum to solve the problem: the total momentum of the original nucleus must be equal to the total momentum after the alpha particle has been emitted. Therefore:

$p_i = p_f\\ Mu=m_1 v_1 + m_2 v_2 =$

where:

$M =222u$ is the mass of the original nucleus

$v=420 m/s$ is the initial velocity of the nucleus

$m_1 = 4 u$ is the mass of the alpha particle

$v_1$ is the final velocity of the alpha particle

$m_2 = 222u-4u = 218 u$ is the mass of the daughter nucleus

$v_2 = 350 m/s$ is the final velocity of the nucleus

Solving for $v_1$ , we find the final velocity of the alpha particle:

$v_1 = \frac{Mu-m_2 v_2}{m_1}=\frac{(222)(420)-(218)(350)}{4}=4235 m/s$

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

4 0

3 years ago

A football is kicked at ground level with a speed of 15.0 m/s at an angle of 31.0° to the horizontal. How much later does it hit

svetoff [14.1K]

I would say two seconds but I'm not to sure if that is correct.

7 0

4 years ago

¿Por qué decimos que la SIMINELA es un sistema?

rjkz [21]

Answer:

I dont speak Spanish but I used google translate tehe

Explanation:

La infección por Salmonella (salmonelosis) es una enfermedad bacteriana común que afecta el tracto intestinal. ... Los humanos se infectan con mayor frecuencia a través de agua o alimentos contaminados. Por lo general, las personas con infección por salmonella no tienen síntomas. Otros desarrollan diarrea, fiebre y calambres abdominales dentro de las ocho a 72 horas.

7 0

3 years ago