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3 years ago

10

In a doorknob, the knob is connected to a shaft. When the knob turns, the shaft turns,which moves the door latch. The radius of

the shaft is 8 mm. The radius of the doorknob is 56 mm. What is the mechanical advantage of this wheel and axle?

1 answer:

HACTEHA [7]3 years ago

4 0

Answer:

`7

Explanation:

i know

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3 years ago

Find the magnitude of the impulse delivered to a soccer ball when a player kicks it with a force of 1450 N . Assume that the pla

juin [17]

To solve this problem we will apply the concept of Impulse. Which is described as the product between the Force and the change in time. Mathematically this can be described as

$I = F \Delta t$

Where,

F = Force

$\Delta t$ = Time

Our values are given as,

F = 1450N

$\Delta t = 5.1*10^{-3} s$

Replacing we have,

$I = (1450)(5.1*10^{-3})$

$I = 7.395Kg\cdot m/s$

Therefore the impulse delivered to the soccer ball is $7.395Kg\cdot m/s$ or $7.395N\cdot s$

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3 years ago

Where might someone with a pharmaceutical manufacturing career work?

klemol [59]

Answer: People with careers in pharmaceutical manufacturing can expect to work in: research laboratories or manufacturing plants, and to maintain work hours during the day.

Explanation:

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3 years ago

A box of mass 26 kg is initially at rest on a flat floor. The coefficient of kinetic friction between the box and the floor is 0

Kazeer [188]

Answer:

$\Delta K = 52J$

Explanation:

The change in kinetic energy will be simply the difference between the final and initial kinetic energies: $\Delta K=K_f-K_i$

We know that the formula for the kinetic energy for an object is:

$K=\frac{mv^2}{2}$

where <em>m </em>is the mass of the object and <em>v</em> its velocity.

For our case then we have:

$\Delta K = K_f-K_i=\frac{mv_f^2}{2}-\frac{mv_i^2}{2}=\frac{m(v_f^2-v_i^2)}{2}$

Which for our values is:

$\Delta K = \frac{m(v_f^2-v_i^2)}{2} = \frac{(26Kg)((2m/s)^2-(0m/s)^2)}{2} = 52J$

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4 years ago

What mass of electrons would be required to just neutralize the charge of 5.0 g of protons? (the mass of a proton is 1.67262×10−

Step2247 [10]

<span>To neutralize the charge of 1.0g of electrons?</span>

7 0

3 years ago

Read 2 more answers