What effect will taking a dose of antibiotics that is too small have on the bacteria you are trying to destroy?

1. At which location does the pendulum have the least gravitational potential energy? Why?

Delicious77 [7]

Answer:Point B

Explanation:When it is at the bottom of its swing (arm straight up and down). When it is at its lowest point, Gravity can not pull it down any further. This position also has the most kinetic energy because after it passes the bottom, it goes back up again and loses speed. so when the pendulum is at the bottom it is traveling the fastest it will go.

7 0

3 years ago

What is the velocity of the girl in Figure b? Please help me!!!! Is the answer A,B,C,D,E, or F?

attashe74 [19]

There is a Blank screen

6 0

3 years ago

What is the colour of a shirt which has blue and white stripes when put under yellow light? Explain.

GenaCL600 [577]

Answer:

Black and yellow strips.

Explanation:

Color of shirt is blue and white stripes

When the shirt is seen in the yellow light, the blue color do not reflect any color so it appears black and the white color reflects the yellow light so it appears yellow.

Thus, the color of shirt is blue appears black and white appears yellow.

8 0

3 years ago

What is the value of work done on an object when a 50-newton force moves it 15 meters in the same direction as the force?

Volgvan

Answer:

W = 750 Joules.

Explanation:

Given that,

Force acting on the object, F = 50 N

Distance moved by the object, d = 15 m

To find,

Work done by the object

Solution,

Let W is the work done by the object. It is given by the product of force and distance. Its expression is given by :

$W=F\times d\ cos\theta$

Here, $\theta=0$ (force and distance are in same direction)

$W=F\times d$

$W=50\ N\times 15\ m$

W = 750 Joules

So, the work done by the force is 750 Joules.

4 0

3 years ago

A satellite orbiting Earth has a tangential velocity of 5000 m/s. Earth’s mass is 6 × 1024 kg and its radius is 6.4 × 106 m.

Aloiza [94]

When a satellite is moving around the Earth's orbit, two equal forces are acting on it. The centripetal and the centrifugal force. The centripetal force is the force that attracts the object toward the center of the axis of rotation. The opposite force is the centrifugal force. It draws the object away from the center. When these forces are equal, the satellite uniformly rotates along the orbit.

Centripetal force = Centrifugal force
Mass of satellite * centripetal acceleration = Mass of satellite * centrifugal acceleration
Centripetal acceleration = Centrifugal acceleration

$\frac{ M_{E}*G }{ ( r_{E} )^{2} } =$ ω^2r

where

$M_{E}$ = mass of earth
G = gravitational constant = 6.6742 x 10-11 m3 s-2 kg-1
 $r_{E}$ = radius of earth
ω = angular velocity
r = radius of orbit

To convert to angular velocity:

Tangential velocity = rω
ω = 5000/r

Then,

$\frac{ (6 \ x \ 10^{24}) *(6.6742 \ x \ 10^{-11} ) }{ ( 6.4 \ x \ 10^{6})^{2} }= ( \frac{5000}{r} )^{2} r$

r = 2557110.465 m

Therefore, the distance of the centers of the earth and the satellite is 2.6 x 10^6 m.

4 0

3 years ago

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