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lord [1]
3 years ago
13

Franny drew a diagram to compare images produced by concave and convex lenses.

Physics
2 answers:
Stella [2.4K]3 years ago
7 0

Answer:

B. virtual

Explanation:

Answer on edge 2020

yanalaym [24]3 years ago
4 0

Answer:

virtual

Explanation:

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An object with an acceleration of –10 m/s² is _____.
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The answer might be B because the value is negative, and negative could mean slowing down.

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3 years ago
What relationship exists between speed, velocity, and acceleration
enyata [817]
Velocity is speed and the direction of the speed. Acceleration is the rate at which Velocity is changing, and the direction in which it's changing.
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3 years ago
Say you want to make a sling by swinging a mass M of 2.3 kg in a horizontal circle of radius 0.034 m, using a string of length 0
ycow [4]

Answer:

T = 764.41 N

Explanation:

In this case the tension of the string is determined by the centripetal force. The formula to calculate the centripetal force is given by:

F_c=m\frac{v^2}{r}  (1)

m: mass object = 2.3 kg

r: radius of the circular orbit = 0.034 m

v: tangential speed of the object

However, it is necessary to calculate the velocity v first. To find v you use the formula for the kinetic energy:

K=\frac{1}{2}mv^2

You have the value of the kinetic energy (13.0 J), then, you replace the values of K and m, and solve for v^2:

v^2=\frac{2K}{m}=\frac{2(13.0J)}{2.3kg}=11.3\frac{m^2}{s^2}

you replace this value of v in the equation (1). Also, you replace the values of r and m:

F_c=(2.3kg)(\frac{11.3m^2/s^2}{0.034})=764.41N

hence, the tension in the string must be T =  Fc = 764.41 N

5 0
3 years ago
The temperature of a small metal cube is 75°c. A student places the cube into an insulated container of water at a temperature o
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What type of force act on a man at room temperature and in a ground?
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