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3 years ago

Whitch best defines the relationship between speed and velocity

2 answers:

8 0

Velocity is speed with its direction also specified.

30 miles per hour south
and
30 miles per hour west

are the same speed but different velocities.

Neko [114]3 years ago

4 0

Speed is a scalar quantity, meaning it has no direction. Velocity is a vector, meaning it has a specific direction associated with it.

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A main difference between gravitational and electric forces is that electrical forces

ANTONII [103]

You can’t just do this tm u have to do it now

7 0

3 years ago

A 10cm long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire

soldi70 [24.7K]

Answer:

a) $v=4.0m/s$

b) $B=2.958T$

Explanation:

From the question we are told that:

Wire Length $l=10cm=>0.10m$

Resistance $R=0.35$

Force $F=1.0N$

Power $P=4.0W$

Generally the equation for Power is mathematically given by

$P=Fv$

Therefore

$v=\frac{P}{F}$

$v=\frac{4.0}{1.0}$

$v=4.0m/s$

Generally the equation for Magnetic Field is mathematically given by

$B=\frac{\sqrt{PR}}{vl}$

$B=\frac{\sqrt{4*0.35}}{4*0.10}$

$B=2.958T$

5 0

3 years ago

Endothermic reactions give off heat as they proceed. <br> a. True<br> b. False

Temka [501]

B. False
Endothermic reactions absorb heat.

5 0

3 years ago

True or False: If your gas pedal jams, you should turn the key to lock to lock the steering wheel.

Bond [772]

Answer:False

Explanation:

Turn the key to lock is not advisable as it lock the steering wheel and may create a dangerous situation.

Following steps can be taken in this situation

Try to press the brake to stop the vehicle
Shift gear to neutral in order to cease the acceleration of car.
Try to lift the gas pedal in order to decrease the velocity of car.

5 0

3 years ago

Read 2 more answers

A single output device has failed while the remainder of the PLC system is functioning normally The indicator light on the outpu

Dmitry_Shevchenko [17]

Answer:

check the point where the output device's field wiring is connected to the output rack. ( C )

Explanation:

Given that an indicator light on the output module is indicating that a signal has been sent to the output point where the failed single output device is connected , the best line of action to properly indicate the output device that has filed in the PLC system, is to check the point where the output device's field wiring is connected to the output rack in the PLC system.

A PLC system is a computer control system ( especially Industrial ) that helps in the monitoring the states of input and output devices in an industry.

8 0

3 years ago