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PolarNik [594]
3 years ago
10

A ball is launched horizontally from a height of 172 m above the ground. its initial horizontal velocity is 16m/s. how long does

it take to reach the ground? how far away does it land?​
please answer quickly!!!
Physics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0

Answer:

172*16 times it and that is your answer

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Two masses are attracted by a gravitational force of 7 N.
damaskus [11]

Answer:

The answer to your question is: F  = 0.4375 N. The force will be 16 times lower than with the first conditions.

Explanation:

Data

F = 7 N

F = ?  if the masses is quartered

Formula

F = \frac{Km1m2}{r2}

Process

Normal conditions F = Km₁m₂/r²  = 7              

When masses quartered        F = K(m₁/4)(m₂/4)/r²  = ?

                                                F = K(m₁m₂/16)/r²

                                                F = K(m₁m₂/16r²      = 7/16  = 0.4375 N

3 0
3 years ago
A toy car is placed 29.0cm from a convex mirror. The image of the car is upright and one-sixth as large as the actual car. Calcu
borishaifa [10]

Answer:

The power of the mirror is -17.24 diopter.

Explanation:

Magnification of an image,m = \frac{1}{6}

Distance of the object from the mirror = u = 29.0 cm

Distance of an image from the mirror = v

Magnification = m=\frac{-v}{u}

\frac{1}{6}=\frac{-v}{u}

v=\frac{-u}{6}

\frac{1}{f}=\frac{1}{u}+\frac{1}{v}

\frac{1}{f}=\frac{1}{u}+\frac{-6}{u}

f=\frac{-u}{5}=\frac{-29.0 cm}{5}=-5.8 cm

Focal length of mirror = -5.8 cm =-0.058 m

Power of the lens = P

P =\frac{1}{f}

P=\frac{1}{-0.058 m}=-17.24 D

8 0
3 years ago
An object that is accelerating may be
Elenna [48]

It must be either speeding up, or slowing down, or turning. There are no other possibilities.

6 0
3 years ago
Why does matter increase in volume when it heats up?
ArbitrLikvidat [17]

Answer:All three states of matter (solid, liquid and gas) expand when heated. ... Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid.

Explanation:well I tried lol she just copied and pasted faster than I could

8 0
3 years ago
The cylindrical head bolts on a car are to be tightened with a torque of 63.3 N · m. If a mechanic uses a wrench of length 18.2
Nataly_w [17]

Answer: The perpendicular force to be used to tighten the bolt is

F=347.8N

Explanation:

Mathematically the torque is expressed as

T=F*L

Where T= torque in Nm

F= force in N

And L = perpendicular distance

Now given

T=63.3Nm

L=18.2cm to meter 18.2/100

0.182m

F=?

Making F the subject of the formula in our equation

F=T/L

F=63.3/0.182

F=347.8N

What is torque?

Torque is the product of force and perpendicular distance of the line of action.

6 0
4 years ago
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