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2 years ago

5

Sarah drives at a constant speed of 15 m/s around a circular horizontal curve of diameter 60 m. What are the magnitude and direc

tion of her acceleration?

1 answer:

mojhsa [17]2 years ago

5 0

Answer:

7.5 m/s^2

Explanation:

I hope my answer helps u.

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A long, thin solenoid has 950 turns per meter and radius 3.00 cm. The current in the solenoid is increasing at a uniform rate of

REY [17]

Answer:

Part a)

$E = 0.188 \times 10^{-3} N/CPart b)[tex]E = 0.376 \times 10^{-3}$ N/C

Explanation:

As we know that the magnetic field near the center of the solenoid is given as

$B = \mu_0 ni$

Also we know by equation of Faraday's law

EMF induced in the closed loop will be equal to rate of change in magnetic flux

so we have

$EMF = A\frac{dB}{dt}$

so we have

$\int E. dL = \pi r^2 (\mu_0 n \frac{di}{dt})$

$E. (2\pi r) = \pi r^2 (\mu_0 n \frac{di}{dt})$

$E = \frac{\mu_0 n r}{2} \frac{di}{dt}$

Part a)

At r = 0.500 cm

we have

$E = \frac{4\pi \times 10^{-7} (950) (0.500 \times 10^{-2})}{2}(63)$

$E = 0.188 \times 10^{-3} N/C$

Part b)

At r = 1.00 cm

we have

$E = \frac{4\pi \times 10^{-7} (950) (1.00 \times 10^{-2})}{2}(63)$

$E = 0.376 \times 10^{-3}$ N/C

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3 years ago

When an ice pack is applied to an injury, thermal energy from the injured area transfers to the ice, causing the blood vessels w

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It is conduction I believe

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4 years ago

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Kieran is graduating from high school. He wants to be a urologist. What career path would be best for Kieran to follow?

faust18 [17]

Answer:

four-year degree Right arrow. graduate school Right arrow. license from the NCLEX

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3 years ago

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A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other mov

vovikov84 [41]

Answer:

364.4 J

Explanation:

I = Moment of inertia of the forearm = 0.550 kgm²

v = linear velocity of the ball relative to elbow joint = 17.1 m/s

r = distance from the joint = 0.470 m

w = angular velocity

Using the equation

v = r w

17.1 = (0.470) w

w = 36.4 rad/s

Rotational kinetic energy of the forearm is given as

RKE = (0.5) I w²

RKE = (0.5) (0.550) (36.4)²

RKE = 364.4 J

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4 years ago

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Scientific notation: Convert 7.1 x 10-3 to decimal notation.

marysya [2.9K]

Answer: hey

your answer is gonna be

71000.

Explanation:

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4 years ago