In general, the higher the frequency of the interfering waves that form a standing wave
The greater the number of nodes of nodes and antinodes in the standing wave
What is the sl unit of displacement?
Meter
what is acceleration?
The rate of change of the velcity over time
What is the unit of electrical power?
watt
What is kinetic energy?
The energy of motion
If a string fixed at both ends resonates in its fundamental mode with a frequency 150Hz, at which of the following frequencies wiil it not resonate? choose two answers.
600Hz
which of the following is a vector quantity?
Displacement
What are the the three ways a object can accelertate
Speed up slow down and change direction
What is the unit of electrical charge?
coulomb
What is the equation for kinetic?
KE=1/2mv2
A computer simultaneosly plays sounds of 525 Hz and 535 Hz. what beat frequency will be heard by nearby observers?
10Hz
If a body moves in a straight line without changing direction,which of the following is true ?
Distance=Displacement
What is the formula used to solve for acceleration
a=Vf-Vi/t
Which type of material has the highest electrical conductivity?
superconductor
Does moving car have kinetic energy?
yes, a movingcar possesses kinetic energy b`ecause it is in motion.
The diagram above depicts a standing wave in a rope. which harmonic is illustrated?
3rd
A body moving with uniform velocity has?
Zero acceleration
What des Vf and Vi and stand for
Vf=final velocity Vi=initial velocit
Which instrument is used to measure electrical resistance?
ohmmeter
If the velocity of a body is doubled its kinetic energy will
become 4 times
The diagram above depicts a standing wave in a rope which is the wavelength of the depicted wave?
40cm
The slope of a displacement- time graph represents?
Velocity
When does acceleraion happen?
When an object's velocity changes.
What is the electrical term for the opposition to the flow of electric current in a circuit?
Resistance
A car with a mass of 1,600kg has a kinetic energy of 125,000j. how fast is it moving? (12,5m/s)
12.5 m/s=v