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Science questions  

created by alnunez on 21 May 10
Hard level (50% of success)    30 questions - 80 players
This quiz has questions about what you know in physics and beyond.

Help :
v=volts or speed
i=amps
r=ohms
p=watts
w=wavelength
f=hertz
v=ir (for voltage)
i=v/r (for current)
r=v/i (for resistance)
p=iv (for power)
i=p/v (for current)
v=p/i (for voltage)
r1+r2+r3 (Series circuit)
1/r1+1/r2+1/r3 (parallel circuit)
v=f(w)
f=v/w
w=f/v
y=mx+b
 
1
A series Circuit has 4 two ohm resistors. If the voltage is 16 volts, what is its current?
   
   
   
   
2
An mp3 player uses a 30 volt rechargable battery. If the current use is 5 Amps, what is the resistance?
   
   
   
   
3
A parallel circuit has a 1 ohm, a 3 ohm, and a 2 ohm resistor. If the Current used within the circuit is 10 Amps, then what is the battery's voltage?
   
   
   
   
4
A computer is plugged in to an outlet, whose resistance is 6 ohms. If the current use is 20 Amps, what is the amount of voltage that was coming from the computer?
   
   
   
   
5
A light bulb exerts a current of 50 Amps to the ceiling fan. If the voltage on the bulb is 2. 5 volts, what is the amount of power on the bulb?
   
   
   
   
6
What is the frequency of a wave whose wavelength is 8 meters and its speed is 40 meters per second?
   
   
   
   
7
A wave travels at a speed of 25 meters per second. if the waves frequency is 5 Hz, What is its wavelength?
   
   
   
   
8
A lamp uses a 40 W light bulb. The voltage that is exerted from the bulb is 8 V. What is the bulb's current?
   
   
   
   
9
A 120 volt circuit is in a typical home. If there are 4 ohms of resistance, what is the amount of current flowing through a circuit?
   
   
   
   
10
A 80 W bulb is placed on a lamp. If 20 Amps of current is used, what is the voltage of the bulb?
   
   
   
   
11
Power is measured in
   
   
   
   
12
Current is measured in
   
   
   
   
13
A series circuit has a 5 ohm resistor and a 8 ohm resistor. What is the total resistance of the circuit?
   
   
   
   
14
A parallel circuit has four 6 ohm resistors. What is the total resistance?
   
   
   
   
15
A wave has a frequency of 10 Hz. If its wavelength is 8 Meters, what is the wave's speed?
   
   
   
   
16
The speed for gravity is 9. 8 m/sec squared. An object is thrown at the top of a 6 story biulding. If it takes 2. 5 seconds to hit the ground, what is the height of the fall?
   
   
   
   
17
Light energy comes from tiny particles called
   
   
   
   
18
A box has a normal force of 50 Newtons. If the coefficient of friction is 0. 25, what is the box's frictional force?
   
   
   
   
19
A wave has a frequency of 10 Hz. What is its period?
   
   
   
   
20
A wave has a period of . 05 seconds. What is its frequency?
   
   
   
   
21
A wave at a local beach travels at a speed of 15 m/sec. If the wavelength is 3 meters, what is the frequency of the wave?
   
   
   
   
22
A spring has a constant of 25 newtons/meter. If the spring is compressed to 25 meters, what is the force acting on the spring?
   
   
   
   
23
Motion that has a pattern is
   
   
   
   
24
A car is driving on a road. The destination is 30 meters away. If the driver gets to his destination in 6 seconds, what is the car's acceleration?
   
   
   
   
25
A desk has a mass of 40 kg. if the acceleration of the desk is 6 m/sec, what is the force needed to move the appliance?
   
   
   
   
26
A student is moving an appliance at a speed of 3 m/sec. If the force acting on the object is 300 N, what is the mass of the appliance?
   
   
   
   
27
A spring is being placed on the wall. Its constant is 50 n/m. If the spring is extended by 6 meters, what is the applied force of the spring?
   
   
   
   
28
A car goes from 30-90 m/sec in 10 seconds. What is the acceleration of the car?
   
   
   
   
29
The amount of force needed to move a projector is 50 N. If the mass of the projector is 25 kg, what is the speed of this transfer?
   
   
   
   
30
A family is going to a sporting event. Their car is traveling at a speed of 25 m/sec. If they arrive to the destination in 12 seconds, how far did they have to travel?
   
   
   
   
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