MCAT Physics Practice test 6 & Answer key

1) We have two waves one at $f=1000 Hz$ and another at $g=3000 Hz$.
    find the beat frequencies ?

A. $1000 Hz$ and $4000 Hz$
B. $2000 Hz$ and $3000 Hz$
C. $1000 Hz$ and $3000 Hz$
D. $2000 Hz$ and $4000 Hz$

2) Find the energy contained in photon of light the wavelength is $720 nm $

A. $1,2.10^{-19}j$
B. $2,1.10^{-19}j$
C. $2,75.10^{-18}j$
D. $2,75.10^{-19}j$

3)We have an inductor $20.0 mH$ ,
 Find the value of inductive reactance at frequency of $10kHz$?

A.$ 1256.64 ohms$
B.$ 6.2832   ohms$
C.$ 628.32   ohms$
D.$ 789.56   ohms$


4)One wire carrying $100 mA$ ,find  the flux density of magnetic field in tesla at distance of $10 cm$ from this wire ?

A. $10^{-10}T$
B. $2.10^{-7}T$
C. $2,4.10^{-7}T$
D. $7.10^{-6}T$


Answer key :

1.D
2.C
3.A
4.B

MCAT Physics equations list ( Formulas )

Motion, work, power and energy 

$ v=d/t $
 v : velocity
 d : distance
 t : time

 $a=\Delta v/\Delta t$

a : acceleration
$\Delta v$ : change in velocity
$\Delta t$ : change in time

$P=m.v$

$P$ : momentum
$m$ : mass
$v$ : velocity

$w=F.d$
$ w$ : work
$ F$ : force
$d $ : distance

Electricity


$V=I.R$

$V$ : Potential difference
$I$ : current
$R$ : resistance

$ P=I.V$

$P$ : Power
$I$ : Current
$V$ : Potential difference

$P=V^{2}/R$

$P$ : Power
$V$ : Potential difference
$R$ : resistance

$P=I^{2}.R$

$P$ : Power
$I$ : Current
$R$ : resistance

SAT Physics Practice Questions 3 & answer key

1)An object is traveling along straight line with speed of 100 m/s, after 10 second the speed of this object is 200 m/s.
find the average acceleration?

A. $10  m/s^{2}$
B. $20  m/s^{2}$
C. $1  m/s^{2}$
D. $2  m/s^{2}$

2) One ball makes a rotation around circle of radius 2 m ,with speed of 10 m/s,
    find the frequency of motion in revolutions per second ?

A. 0.33
B. 0.48
C. 0.79
D. 0.88

3)One ball is projected upward with angle of 30 degree ,and initial speed of 50 m/s,
 find the time when the ball will be at the top of trajectory?

A. 5 s
B.10 s
C.15 s
D.25 s

4)We add 30 J of heat to a gas in a container ,and this gas does 10 J of work,
  find the internal energy ?
 A.10 J
 B.20 J
 C.30 J
 D.-20 J

Answer key:
1.A
3.A
2.C
4.D

SAT Physics Practice Questions 2 & answer key

 1)one planet makes rotation around the sun every 628 days ,find the angular velocity of this planet ?

 A. $10  rad/day$
 B. $1  rad/day$
 C. $1.10^{-1} rad/day$
 D. $1.10^{-2} rad/day$

2) we add 8380 j of heat to  2kg of water at temperature of 30 C,find the temperature of water after this add?

A. 31 ºC
B. 36 ºC
C.  40 ºC
D.  41 ºC


3)A charge of 2 C moves with the velocity of 10 m/s  in  a magnetic field of 0.2 T ,the angle $\theta$ between velocity vector an magnetic field vector is $\theta=\pi/2$ .
find the value of magnetic force ?


A.  1 N
B.  2 N
C.  3 N
D. 4 N


4) A metal wire of lenght of 2 m and section area 10 $mm^{2}$ ,and resistivity equal$10^{-7}A.m$,connected to a battrey with potential of 5 V.
find the value of the current in the wire?


A. 100 A
B. 250 A
C. 300 A
D. 450 A


Answer key :


1.D
2.A
3.D
4.B

MCAT Physics Practice test 5 & Answer key

1) we have a ball with mass m=1Kg ,and one force acts on this ball and reduces its velocity from 4m/s to 2m/s in time 1s ,what is the value of this force?

A. - 1N
B.- 2N
C.  1N
D.  3N

2) A force acts on abject with mass m =3Kg ,then gives it an acceleration of $1 m/s^{2}$,find the value of acceleration for same force if the mass of object is 2Kg ?

A.  $1  m/s^{2}$
B.  $1.5  m/s^{2}$
C. $3  m/s^{2}$
D. $6  m/s^{2}$

3)we have a volume of gas  $ V=10m^ 3$ at pressure 100 KPa and temperature 10 C,find new volume of this gas if we change the pressure to 200 KPa and temperature to 50 C?

A. $20  m^ 3$
B. $21 m^ 3$
C. $25 m^ 3$
D. $30 m^ 3$

4)How much heat is required to raise temperature of 500 mL of water from 50 C to 100 C ?

A. 10 Kcal
B. 20 Kcal
C. 25 Kcal
D. 50 Kcal

5) A object moves along the X axis according to the law :

 $ x= t^{3}+3t^{2}+2$
find acceleration at t=3s ?

A. $6 m/s^{2}$
B.$12 m/s^{2}$
C.$18 m/s^{2}$
D.$24 m/s^{2}$

6) A object moves along the X axis according to the law :

 $ x= 5t^{2}+2t+7$
 find velocity at time t= 10 s ?

A.102 m/s
B.120 m/s
C.170 m/s
D.190 m/s

7)A charge of 10 C and mass $m=10^{-27}kg$ moves with velocity v=5 m/s in a magnetic field of 0.5 T
the angle between velocity vector and magnetic field vector is $\pi/2$  .
find the radius of the circle of the charged particle's orbit?

A.$10^{-26}m$
B.$10^{-27}m$
C.$2.10^{-27}m$
D.$5.10^{-26}m$



Answer key :
1.B
2.B
3.C
4.C
5.D
6.A
7.B

PCAT Physics Practice test 2 & answer key

1)witch one is Balmer series ?
 A.$1/\lambda=R(1/1^{2}-1/2^{2})$
 B.$1/\lambda=R(1/2^{2}-1/2^{2})$
 C.$1/\lambda=R(1/3^{2}-1/2^{2})$
 D.$1/\lambda=R(1/4^{2}-1/2^{2})$

2)we have one wave with wavelength $\lambda= 6000 A$ ,find the frequency of this wave?

 A.$10^{13}$
 B.$5.10^{14}$
 C.$5.10^{15}$
 D.$6.10^{15}$

3) what is the value of energy for free particule?

 A.  E<-10 e.v
 B . E=-10 e.v
 C. E=-13.6 e.v
 D. E>= 0  e.v

MCAT Physics Practice test 4 & Answer key

1)The period of a wave is $2500.10^{-6} s $ ,what is the frequencey of this wave ?

A. 400 Hz
B. 600 Hz
C. 1200 Hz
D. 2500 Hz

2) A car has a speed 10 m/s ,start to slow at acceleration of $1 m/s^{2}$ ,witch distance can move before stopping?

A.10 m
B.25 m
C.50 m
D.75 m

3) a man makes a lap around 400 m track in time 50 s.what is his average speed?

A.2 m/s
B.4 m/s
C.8 m/s
D.12 m/s

4) A metal bar is 100 cm long at 20 C ,we heated this bar at 40 C ,what is the increase in length if the linear exponsion coefficient of this metal is  $2.10^{-5 }C^{-1}$.

A. $10^{-5 }$
B. $2.10^{-5 }$
C. $10^{-4}$
D. $4.10^{-4 }$

5) A  car starts with speed null at constant acceleration $4m/s^{2}$ ,find the speed of the car at the end of 10 s?

A. 5 m/s
B.10 m/s
C.15.25 m/s
D.40 m/s

6) the speed of light in glass is  $2.10^{8} $ what is the refractive index of glass?

A.n=1.5
B.n=2
C.n=3
D.n=4

Ansewr key :
1.A
2.C
3.C
4.C
5.D
6.A