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3 years ago

5

What must differ between the atom of 2 different elements? protons in the atom electrons in the atom neutrons in the atom proton

s and neutrons in the nucleus

1 answer:

e-lub [12.9K]3 years ago

4 0

The protons in the atom must differ between the atom of 2 different elements

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What is the speed of the roller coaster at the top of the loop if the radius of curvature there is 11.0 m and the downward accel

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<span>When an object moves in a circle, the acceleration points toward the center of the circle. This acceleration is called centripetal acceleration. We can use a simple equation to find centripetal acceleration. a = v^2 / r We can use this same equation to find the speed of the car. v^2 = a * r v = sqrt { a * r } v = sqrt{ (1.50)(9.80 m/s^2)(11.0 m) } v = 12.7 m/s The speed of the roller coaster is 12.7 m/s</span>

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3 years ago

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Answer:

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2 years ago

Alonzo sprints for 500 meters along a straight track during a race. After crossing the finish line, he to walks back along the t

ehidna [41]

450 meters is the displacement

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3 years ago

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Racing greyhounds are capable of rounding corners at very high speeds. A typical greyhound track has turns that are 45-m-diamete

Margarita [4]

Explanation:

It is given that,

Diameter of the semicircle, d = 45 m

Radius of the semicircle, r = 22.5 m

Speed of greyhound, v = 15 m/s

The greyhound is moving under the action of centripetal acceleration. Its formula is given by :

$a=\dfrac{v^2}{r}$

$a=\dfrac{(15)^2}{22.5}$

$a=10\ m/s^2$

We know that, $g=9.8\ m/s^2$

$a=\dfrac{10\times g}{9.8}$

$a=1.02\ g$

Hence, this is the required solution.

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2 years ago

A 4300-N force from a car's engines produces an acceleration of 3.3 m/s2. What is the mass of the car?

sertanlavr [38]

Answer:The net force acting on the car is 3×103 Newtons

Explanation:

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2 years ago