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3 years ago

Choose all the answers that apply.

Physics

2 answers:

bogdanovich [222]3 years ago

5 0

Answer:

Takes the shape of its container, is difficult to compress , has a fixed volume.

Explanation:

jek_recluse [69]3 years ago

3 0

Answer:

takes the shape of the container

Explanation:

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PLSSS HELP!! Answer all

Reptile [31]

Answer:

Explanation:

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8 0

3 years ago

A lunar lander is descending toward the moon's surface. Until the lander reaches the surface, its height above the surface of th

NeX [460]

Answer:

Part A:

$v_y=-63 m/s$

Part B:

$v_y=-24.67792 m/s$

Explanation:

Part A:

The formula we are going to use is:

$v_{y}= \frac{dy(t)}{dt} \\v_y=\frac{d(b-ct+dt^2)}{dt} \\v_y=-c+2d*t$

For finding the initial velocity we put t=0 in above formula:

$v_y=-c+2d*t$

$v_y=-c+2d*0$

$v_y=-c$

c=63 So,

$v_y=-63 m/s$

Part B:

When lander reaches the lunar surface y(t)=0

$y(t)=b-ct+dt^2=0$

Using Quadratic formula:

$t=\frac{-b\±\sqrt{b^2-4ac} }{2a}$

In our case:

$t=\frac{c\±\sqrt{c^2-4db} }{2d}$

$t=\frac{63\±\sqrt{(63)^2-4*1.05*800} }{2*1.05}$

$t=41.75139sec$ $t=18.248606sec$

We are going to choose t=18.248606 sec because it is smaller.

$v_y=-c+2d*t$ (Calculated above)

$v_y=-63+2(1.05)*18.248606$

$v_y=-24.67792 m/s$

4 0

4 years ago

What is a hypothesis?

Likurg_2 [28]

Answer:

Explanation:

a statement that can be tested through the scientific method

4 0

3 years ago

What is the Force in Newtons exerted by brick with a mass of 0.5 kg and an Acceleration of 52m/s2?

Sliva [168]

F= a*m
F= 0.5 kg * 52m/s^2
F=26kgm/s^2 or 26N

7 0

3 years ago

Based on the law of conservation of energy, how can we reasonably improve a machine’s ability to do work?

MrMuchimi

D. Redefine the machine’s system boundaries.

The Law of Conservation of Energy states that energy can't be created not destroyed. Energy, however, can be changed from one form to another. The law applies to isolated systems only. By redefining and expanding the system (including all factors affecting it) , the machine's ability to do work should improve.

7 0

3 years ago

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