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Tpy6a [65]
3 years ago
9

Which of the following is not a simple machine?

Physics
2 answers:
erica [24]3 years ago
8 0

Answer:

C

Explanation:

A wheel and axle, a lever, and a screw are all simple machines.

A pair of scissors is not a simple machine.

Answer is C.

faltersainse [42]3 years ago
5 0

C. scissors are a TYPE of. it is not a simple machine

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Which of the following best represents a decomposition reaction?
Fed [463]

Answer: AB-> A+B

Explanation:

Chemical decomposition is the breakdown of a single entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis. In short, the chemical reaction in which two or more products are formed from a single reactant is called a decomposition reaction.

4 0
3 years ago
A 92kg astronaut and a 1200kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving
Harman [31]

Answer:

13.7m

Explanation:

Since there's no external force acting on the astronaut or the satellite, the momentum must be conserved before and after the push. Since both are at rest before, momentum is 0.

After the push

m_av_a + m_sv_s = 0

Where m_a = 92kg is the mass of the astronaut, m_s = 1200kg is the mass of the satellite, v_s = 0.14 m/s is the speed of the satellite. We can calculate the speed v_a of the astronaut:

v_a = \frac{-m_sv_s}{m_a} = \frac{-1200*0.14}{92} = -1.83 m/s

So the astronaut has a opposite direction with the satellite motion, which is further away from the shuttle. Since it takes 7.5 s for the astronaut to make contact with the shuttle, the distance would be

d = vt = 1.83 * 7.5 = 13.7 m

4 0
3 years ago
When joshua brakes his speeding bicycle to a stop, kinetic energy is transformed to select one:?
photoshop1234 [79]
Potential energy, I’m pretty sure I don’t know but we was learning this in science and this is all I remember that potential energy is the moment energy reaches to a stop...
7 0
3 years ago
Read 2 more answers
I need help on all of this
wel

dude is -2m/s, ...ettte is +2m/s

pos vel is when dudette, eg, is going in increasing x, in this case.

neg vel  is when dudette, eg, is going in decreasing x, in this case. ie she turns round and runs

zero vel is zero speed. dudette standing still

positive vel neg pos top dia

no

yes

yes

yes

yes

yes

all yes looks like ...




4 0
3 years ago
What do u put on the last blank?
Nookie1986 [14]

The greater the MASS of a moving object, the more kinetic energy it has. <3

8 0
3 years ago
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