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Serggg [28]
3 years ago
13

Hey can anyone help me wih these questions please

Physics
1 answer:
Pavel [41]3 years ago
4 0
<span>The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in.An object will sink if it is more dense than the liquid it is placed in.

Since the above solid sinks to the bottom it reflects that the object is less dense that the water.

Hope this answers your question</span>
You might be interested in
What is the value of R2 in this parallel circuit? (5 stars)
o-na [289]

Answer:

20 Ω

Explanation:

Voltage, current, and resistance are related by Ohm's law:

V = IR

40 V = (4 A) R

R = 10 Ω

The total resistance of the circuit is 10 Ω.

Resistors in parallel have a total resistance of:

1/R = 1/R₁ + 1/R₂

1 / (10 Ω) = 1 / (20 Ω) + 1/R₂

R₂ = 20 Ω

4 0
2 years ago
6. Rock Ais thrown horizontally off a cliff with a velocity of 15 m/s. The rock lands 75m from
Harman [31]

Answer:

5  seconds

Explanation:

3 0
3 years ago
Will xenon react with nitrogen and why
Andreyy89
<span>No, xenon wont react with nitrogen.

This is because xenon is a noble gas and noble gases on</span>ly react with other elements under very unusual circumstances.<span>

I hope this has helped you.</span>
3 0
3 years ago
Technician A says that a common cause of parking brakes that will not hold, is out of adjustment slack adjusters. Technician B s
Flauer [41]

Answer:

a) technician A

Explanation: A parking brake is a secondary and support brake system which is usually applied when the vehicle is not in motion,this is done to prevent any form of motion and the possibility of any form of accident.

A secondary circuit is a circuit or coil in which current is generated through induction from another circuit or coil called the primary circuit,it has not been discovered that a low pressure from that circuit has led to poor trailer parking brake performance.

6 0
3 years ago
Refrigerant-134a enters an adiabatic compressor as saturated vapor at -24C and leaves at 0.8 MPa and 60C. When the mass flow r
sergey [27]

Answer:

= 287kW

Explanation:

Knowing the enthalpy data, we have to

h1=239.16kJ/kg\\h2=296.81kJ/kg

So,

E_i_n_p_u_t=mh_1

Here,

m=mass flow rate

h= Enthalpy of refrigerant at the compressor

Replacing

= 1.2 × 239.16

= 287kW

4 0
3 years ago
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