A car of mass m = 1200kg travels a distance A, = 2.2 km. At the beginning of the movement the speed of the car is V, = 10m / s and at the end its speed is v = 50 m / s. Determine the work and force exerted on the body, b) the power exerted by the car's engine.
Q: A person is holding a bucket by applying a force of 10N. He moves a horizontal distance of 5m and th...
A: Option c
Q: Question attached
A: The initial amount of thorium-230 in the rock is given as, Ao = 25 g The final amount if thorium-230...
Q: A gun fires a bullet of mass 50g with a velocity of 30m/s. Because of this, the gun is pushed back w...
A: Given: The mass of bullet is m1=50 g. The initial velocity of bullet is u=30 m/s. The final velocit...
Q: If there is a change of angular momentum from J to 4J in 4s, then the torque is ___________ a) (3/4)...
A: Option
Q: How much does it cost to watch a complete 19 hour long World Series on a 193.0 W television set? Ass...
A:
Q: The water droplets in free fall are spherical due to ___________ a) Gravity b) Viscosity c) Surface ...
A: Surface tension is the tendency of liquid surfaces to shrink into the minimum surface area possible....
Q: A mass of 4 kg on a horizontal surface has an initial velocity of 5 m/s when it hits a spring. The s...
A: Given: The value of mass is m=4 kg. The initial velocity of mass is u=5 m/s. The distance of spring...
Q: A child is sitting on a swing. Its minimum and maximum heights from the ground 0.75m and 2m respecti...
A: Option
Q: At a critical temperature, the surface tension of a liquid ___________ a) Is zero b) Is infinity c) ...
A: A
Q: Show your complete solution.Use 3 decimal places throughout your solution and express final answers ...
A:
Q: G is called gravitation constant. a) True b) False
A:
Q: Please state whether each is True or False; if flase, please explain why
A:
Q: A boat having a length of 3m and breadth 2m is floating on a lake. The boat sinks by one cm when a m...
A: Given: The length of the boat l = 3 m. The breadth of the boat b = 2 m. The height of boat sinks h ...
Q: Analogue of mass in rotational motion is ___________ a) Moment of inertia b) Angular momentum c) Gyr...
A: Option a
Q: According to the figure, since r=-0,14, k=4,61, E 16,91 (@ medium boundary) and reflected electric f...
A: The reflection coefficient Γ is given by, Γ=ErEi (1) Given that Γ=-0.14 and |Ei|=16.91 pluggi...
Q: A constant pressure air thermometer gave a reading of 47.5 units of volume, when immersed in ice-col...
A: B
Q: 2. A mass m is moving with a constant velocity along a line parallel to the x-axis, away from the or...
A: Option
Q: A moving body of mass m and velocity 3km/h collides with a rest body of mass 2m and strikes to it. N...
A: C
Q: A negative point charge of 1.5 nC and a positive point charge of 4 nC are placed 10 cm apart. Calcul...
A: Given: The negative point charge is 1.5 nC. The positive point charge is 4 nC. The separation betwee...
Q: Ratio of the amount of heat radiation, transmitted through the body to the amount of heat radiation ...
A: C
Q: For a body moving in a circular path, the work done by the centripetal force is ___________ a) Negat...
A: D
Q: A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is s...
A: Option d
Q: A copper wire of length 3m and 1mm diameter is subjected to a tension of 5N. Calculate the elongatio...
A: D
Q: The figure below shows a hollow spherical shell (i.e. empty inside) with uniform charge density inne...
A:
Q: A black body is at 727°C. It emits energy at a rate, which is proportional to ___________ a) (727)2 ...
A: Option
Q: The link BC is fixed at point D and freely rotates about this point. The collar B can slide through ...
A: Given The link BC is fixed at point D and freely rotates about this point. The collar B can slide th...
Q: Amorphous solids do not melt at a sharp temperature, rather these have softening range. a) True b) F...
A: A
Q: Please help. This problem involves finding the tension of a rod in a pedullum. Thank you.
A: The force body diagram for the given arrangement can be drawn as below,
Q: A block of mass 5 kg has a speed of 2 m/s at a height h above a spring (spring constant k = 1000 N/m...
A: Given : Mass of the block, m = 5 kg Speed of the block, v = 2 m/s Spring constant, k = 100...
Q: Two racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their spe...
A: Option a
Q: Find the net electric potential at origin due to the given charges. Let Q, = + 2 µc, Q = +5 µC, and ...
A: Let the adjacent lines in the graphs be separated by a m. The potential at the origin is given by:
Q: What is the lattice constant for FCC crystal having atomic radius 1.476 Å? a) 1.476 Å b) 4.1748 Å c)...
A: B
Q: A bullet of mass 20g is found to pass two points 30m apart in a time interval of 4s. Calculate the k...
A: c
Q: A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 30.0º abov...
A: Given: The initial velocity of the projectile is 50 m/s. The angle of the projection is 30°. The pro...
Q: A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping thr...
A: Whether the cylinder rolled up or down, the centre of mass and hence the point of contact of the cyl...
Q: How do the allowed orbits for electrons in atoms differ from the allowed orbits for planets around t...
A: Electrons in an atom occupy large, empty volume of space around the nucleus like the planets do arou...
Q: If the radius of the earth decreases by 1% and its mass remains the same, then the acceleration due ...
A: Option
Q: What is the possible number of different types of lattices (3D)? a) 4 b) 8 c) 14 d) 17
A: C
Q: If in a wire of Young’s modulus Y, longitudinal strain is produced, then the value of potential ener...
A: The correct option is d. That is, If in a wire of Young’s modulus Y, longitudinal strain is produce...
Q: 2) Which of the downs are not used during quantum tunneling? A) ReflectionB) principle of implutyC) ...
A: The probability of an object tunneling through a barrier decreases with the object's increasing mass...
Q: 1.See the picture at the left. Is the centroid and the center of mass (COM) of the bird at the same ...
A: Concept used: Centroid is the geometric center of an object. It is dependent on the shape of object....
Q: Q3. A car has a 750-kg body, four 20-kg wheels, and a 70-kg driver. The wheels are 1 m in diameter a...
A: Mass of the car=750 Kg Mass of the four wheels=4×20=80 Kg Mass of the driver=70 Kg Total mass of the...
Q: An electric dipole with charges +3nC and -3nc, that are separated by 20 micrometers, is inside a fie...
A: Charge on dipole q = 3×10-9 C Distance between charges d = 20×10-6 m Dipole moment of dipole is give...
Q: I need the answers for d-f but please also answer a-c as well.
A: Note: As per the policy only three subparts of the question will be solved. Please re-upload the que...
Q: A water balloon of mass 1000 grams is rolled on level ground with an initial velocity of 35 meters p...
A: Part-a The mass of the water ballon m = 1000 g. The initial velocity of the ballon u = 35 m/s. The ...
Q: A flywheel is attached to an engine to ___________ a) Increase its speed b) Decrease its speed c) He...
A: C
Q: When a body falls freely under gravity, then the work done by the gravity is ___________ a) Positive...
A: Since we know, w= force * displacement w=f.d=fdcosθwhere θ=0, in case of free falling under gravityw...
Q: Standing is not allowed in double decker bus. a) True b) False
A: True
Q: The total energy of the universe is constant. a) True b) False
A: Option a
Q: In a hand driven grinding machine, the handle is put _____________ a) Perpendicular to the stone b) ...
A: Option
Trending now
This is a popular solution!
Step by step
Solved in 3 steps