2. The 7-oz slider has a speed of 2 ft/s as it passes point A of the smooth wire guide that lies in the horizontal plane. Find the magnitude of the force that the guide exerts on the slider a. the instant before the slider passes point A 8" b. the instant it passes point B. B A.
Q: If the density of the planet is doubled without any change in its radius, how does g change on the p...
A: D
Q: As seen in the figure, three masses are connected to each other with the system set up on a table. ...
A:
Q: On the application of a constant torque, a wheel is turned from rest through 400 radians in 10s. Fin...
A: D
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: The helicopter view in the figure shows two people pulling on a stubborn mule. The person on the rig...
A:
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, Mass of bullet, mB =50g,Velocity of bullet,vB =30m/s,Mass of gun, mG =?Velocity of gun, vG=...
Q: There is no atmosphere on the moon, because ___________ a) It is closer to the earth and also it has...
A: D
Q: A student holds a bike wheel and starts it spinning with an initial angular speed of 9.0rotations pe...
A: Let ωi denotes the initial angular speed, t denotes the time, n denotes the number of rotations comp...
Q: A charge emanates an electric field of 97 N/C. If this field is placed on a circular surface with a ...
A: Given, Electric field E =97 N/Cradius =53 μmφ=690then normal angleand θ=900-690θ=210
Q: A child is sitting on a swing. Its minimum and maximum heights from the ground 0.75m and 2m respecti...
A: Option
Q: The kinetic energy is water is used to run turbines. a) True b) False
A: Option b
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: Kinetic energy with any reference must be ___________ a) Zero b) Positive c) Negative d) Either nega...
A: B
Q: The moment of inertia of a uniform circular disc about its diameter is 100gcm2. What is its moment o...
A: By the theorem of parallel axes, moment of inertia about a tangent parallel to the diameter, I = Id+...
Q: In a capillary tube experiment, a vertical, 30 cm long capillary tube is dipped in water. The water ...
A: C
Q: A 1.50 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a consta...
A:
Q: An X-ray tube used for cancer therapy operates at 4.00 MV with a beam current of 23.5 mA striking a ...
A: We know that , Power = Voltage × Current So, P= VI P= 4×106×23.5 ×10-3 P= 94×103 W
Q: At a critical temperature, the surface tension of a liquid ___________ a) Is zero b) Is infinity c) ...
A: A
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: Question 3) As shown in the figure, a block with a mass of 0.8kg is attached to the end of a spring ...
A:
Q: A child sits on a merry‑go‑round that has a diameter of 6.00 m. The child uses her legs to push the ...
A: This is a problem from circular motion. To solve this problem we will use the modified kinematical e...
Q: A hammer is resting on a plane surface. If force P is applied on the hammer along with a line not pa...
A: Since if any force act on a body on its axis of center of mass, then the resultant force is in forwa...
Q: The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet...
A: Option
Q: If the earth stops rotating, the value of g at the equator ___________ a) Increases b) Decreases c) ...
A: Increase
Q: Suppose that 7,244.5J is added to a container of water that has a mass of 193.75g. If the final tem...
A:
Q: Heat current is maximum in which of the following? a) Copper b) Steel and copper c) Copper and steel...
A: Option
Q: The sprinkling of water reduces slightly the temperature of a closed room because of ___________ a) ...
A: C
Q: If the kinetic energy of the satellite revolving in an orbit close to the earth’s surface happens to...
A: Option d
Q: iron has a bcc structure with atomic radius 0.123 å. find the lattice constant. a) b) 4.587 c) 2.3...
A: r = 0.123 Å The lattice constant for BCC = 4r/√3 The lattice constant = 0.2840 Å.
Q: In a crowd of body-to-body people, if one person pushes another person, a wave is set up as that “pu...
A: Introduction: A vibrating object pushes against the randomly-moving air molecules in the vicinity of...
Q: Assuming the earth to be a sphere of uniform mass density, how much would a body weigh half way down...
A: Option
Q: 3- A mercury parameter is read in the same place on two different days (750 mm), while the temperatu...
A: Let h denotes the barometer reading, ρ denotes the mercury density, g denotes the gravitational acce...
Q: (c) Why does the predicted speed of block Z after the collision not agree with the actual speed of b...
A: Given : Actual speed of block Z and predicted speed of block Z after collision. Explain why the a...
Q: A Chevrolet Corvette convertible can brake to a stop from a speed of 60.0 mi/h in a distance of 123 ...
A: Given: The initial velocity of the car is 60 mi/hr and the car stops so the final velocity of it is ...
Q: Clinical thermometer can be sterilized by boiling. a) True b) False
A: Option
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: The motion of planets in the solar system is an example of the conservation of ___________ a) Mass b...
A: A
Q: A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force F is applied a...
A: D
Q: For a mass on a spring in simple harmonic motion, the system's potential energy is maximum when the ...
A: Introduction: If a motion can be expressed in terms of sine or cosine function, the motion is said t...
Q: It is possible for an object moving in a circular path to have a centripetal acceleration of constan...
A: The given statement represents the situation of Non uniform circular motion.
Q: Consider a football thrown directly northward at a latitude of 40◦N. The distance of the quarterback...
A: By what amount (in meters) is the ball deflected?Given,speed of ball(v)=25 ms-1distance of the quart...
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: Option c
Q: A toaster is rated at 620 W when connected to a 140 V source. What current does the toaster carry, a...
A: Here, Power = 620W Voltage = 140 V Now for the power P= VI I = P/ V I= 620/ 140 = 4.43 A Now for th...
Q: Consider a tennis ball (58.0 g) that was served to a speed of 200 km/h. During the match, the “Hawk-...
A: Concept used: Wave-particle duality is applicable to microscopic objects. Hence, position and moment...
Q: Two eesistimceb of 30 n each are seis with heat aranged Jonls perdudd for One neinete a voltge romce...
A: Formula for Heat liberated, H = I2 * R * T or H = T * V2 / R Data given : Time, T = 1 minute = 60 s...
Q: A man is standing on a spring platform. Reading of spring balance is 60kg wt. If the man jumps outsi...
A: Option d
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: A 20cm long capillary tube is dipped in water. The water rises up to 8cm. If the entire arrangement ...
A: 20 cm
Q: If earth loses its gravity, then for a body ___________ a) A weight becomes zero, but not the mass b...
A: A
Q: 5. Two cables are tied to the 2.0 kg ball shown below. The ball revolves in a horizontal circle at c...
A:
Solution:
a)
Given that,
The weight of the slider is 7-oz
So,
Therefore,
The magnitude of the force exerted by the guide on the slider is:
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
