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4 years ago

Which statement describes an unanticipated impact of a technological

1 answer:

6 0

Answer: the development of antibiotics allowed people to be treated for bacterial infections, but their overuse had led to strains of bacteria that cannot be killed by available antibiotics

Explanation: I just took the test

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Friend says that temperature increases as altitude increases because you’re moving closer to the sun. Is this true? Explain.

frosja888 [35]

True but dont know how to explain sorry

4 0

3 years ago

Read 2 more answers

A packing crate is sitting at rest on an inclined loading ramp. How does the magnitude of the force of static friction compare t

eduard

As a crate is resting on the inclined surface of the ramp we have following forces on the crate

1. Weight of the crate vertically downwards

2. Normal force due to ramp perpendicular to the surface

3. static friction force along the ramp upwards

so here we know that crate is at rest

so we can say that

normal force is balanced by component of weight of crate

so we have

$N = mg cos\theta$

also we can say that friction force is balanced by another component of weight of the crate

$F_f = mg sin\theta$

so friction force is less than the weight of the crate and it will act opposite to it

8 0

4 years ago

How much energy is stored by the electric field between two square plates, 8.5 cm on a side, separated by a 2.5-mm air gap? The

snow_lady [41]

Answer:

The stored energy is $3.83\times10^{-6}\ J$ .

Explanation:

Given that,

One side of square plates = 8.5 cm

Distance = 2.5 mm

Charge = 14 nC

We need to calculate the energy stored

The energy is stored by the electric field between two square plates is defined as,

$U=\dfrac{1}{2}\times\epsilon_{0}\times(\dfrac{q}{A\epsilon_{0}})^2\times A\times D$

$U=\dfrac{1}{2}\times\dfrac{q^2}{A\epsilon_{0}}\times D$

We calculate the area iof square plates

$A=(8.5\times10^{-2})^2$

$A=0.007225=72.2\times10^{-4}\ m^2$

Now, put the value into the formula

$U=\dfrac{1}{2}\times\dfrac{(14\times10^{-9})^2}{72.2\times10^{-4}\times8.85\times10^{-12}}\times2.5\times10^{-3}$

$U=3.83\times10^{-6}\ J$

Hence, The stored energy is $3.83\times10^{-6}\ J$ .

3 0

3 years ago

He primary coil in a transformer has 250 turns; the secondary coil has 500. Which is correct?

Marysya12 [62]

Answer:

Explanation:

hope its help po #carry onlearning

5 0

2 years ago

If you placed a cylinder with a 0.25 m radius in the middle of a record player that spins at 4.7 rad/s, what is its angular mome

podryga [215]

Answer:

0.29 kg m² / s

Explanation:

Angular momentum is the product of moment of inertia and angular velocity.

L = I ω

For a solid cylinder, I = ½ m r².

L = ½ m r² ω

L = ½ (2.0 kg) (0.25 m)² (4.7 rad/s)

L = 0.29 kg m² / s

7 0

3 years ago