Physics-
General
Easy
Question
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with 
= 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary (g 
)
The total kinetic energy of system (trolley + girl) at the instant the girl acquires her maximum relative speed with respect to trolley, is
- 1350 J
- 1250 J
- 2475 J
- None
The correct answer is: None
Related Questions to study
physics-
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g )
The minimum time in which the girl can acquire her maximum speed, for no slipping, is
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g )
The minimum time in which the girl can acquire her maximum speed, for no slipping, is
physics-General
physics-
Logic gates X and Y have the truth tables shown below
When the output of X is connected to the input of Y, the resulting combination is equivalent to a single.
Logic gates X and Y have the truth tables shown below
When the output of X is connected to the input of Y, the resulting combination is equivalent to a single.
physics-General
physics-
The logic circuit shown below has the input waveforms ‘A’ and ‘B’ as shown. Pick out the correct output waveform
The logic circuit shown below has the input waveforms ‘A’ and ‘B’ as shown. Pick out the correct output waveform
physics-General
physics-
Truth table for system of four NAND gates as shown in figure is :
Truth table for system of four NAND gates as shown in figure is :
physics-General
physics-
Which of the following truth tables is true?
Which of the following truth tables is true?
physics-General
physics-
The following configuration of gates is equivalent to
The following configuration of gates is equivalent to
physics-General
physics-
Figure shows the transfer characteristics of a base biased CE transistor Which of the following statements are true ?
A) At V1=0.4V transistor is in active state
B) At V1=1V it can be used as an amplifier
C) At V1=0.5V, It can be used as a switch turned off
D) At V1=2.5V, it can be used as a switch turned on
Figure shows the transfer characteristics of a base biased CE transistor Which of the following statements are true ?
A) At V1=0.4V transistor is in active state
B) At V1=1V it can be used as an amplifier
C) At V1=0.5V, It can be used as a switch turned off
D) At V1=2.5V, it can be used as a switch turned on
physics-General
General
I don’t like sports, _____________ does my dad.
I don’t like sports, _____________ does my dad.
GeneralGeneral
physics-
In the circuit, transistor has a current 
=100 What should be the base resistor RB neglect VBE , so that VCE=5V
In the circuit, transistor has a current =100 What should be the base resistor RB neglect VBE , so that VCE=5V
physics-General
physics-
In the diagram D an ideal diode and an alternating voltage of peak value 10V is connected as input V1 Which of the following diagram represents the correct waveform of output voltage 
?
In the diagram D an ideal diode and an alternating voltage of peak value 10V is connected as input V1 Which of the following diagram represents the correct waveform of output voltage ?
physics-General
physics-
In the circuit shown in figure (1), the 
are respectively
In the circuit shown in figure (1), the are respectively
physics-General
physics-
Identify the gate represented by the block diagram as shown in fig.
Identify the gate represented by the block diagram as shown in fig.
physics-General
physics-
For the given combination of gates, if the logic states of inputs A, B, C are as follows A=B=C=0 and A=B=1, C=0 then the logic states of output D are
For the given combination of gates, if the logic states of inputs A, B, C are as follows A=B=C=0 and A=B=1, C=0 then the logic states of output D are
physics-General
physics-
A Truth table is given below. The logic gate having following truth table is
A Truth table is given below. The logic gate having following truth table is
physics-General
physics-
Consider a two-input AND gate of figure below. Out of the four entries for the Truth Table given here, the correct ones are
Consider a two-input AND gate of figure below. Out of the four entries for the Truth Table given here, the correct ones are
physics-General
