A toy roller coaster cart is launched by first compressing a spring, then being released to travel up the track. Assume that: •The spring compresses by a maximum of 0.14 m •The mass of the cart is 0.24 kg •The work done by friction is 0.29 J •The height of the first hill is 0.75 m What spring constant is necessary to get the cart to the top of the first hill, traveling at 0.9 m/s?

Q: ▾ Part A Suppose that the initial moment of inertia of a skater for arms and legs in is 0.90 kg m²…

A:

Q: 15-59 The device pictured in the following figure entertains infants while keeping them from…

A:

Q: A student music box produces a sinusoidal wave with a frequency of 378 Hz. The temperature is…

A:

Q: A pipe system consists of three pipes with lengths L₁ = 1.80 m, L₂ = 0.600 m, and L3 = 2.50 m. A…

A: We have for torque, τ→=r→×F→

Q: One of the isotopes used for PET scans is oxygen -15, a positron emitter. What new element is formed…

A: Oxygen -15 undergoes positron decay because it has too few neutron for the number of protons. The…

Q: An ideal gas expands isobarically from state A to state B. It is then compressed isothermally from…

A:

Q: A car of mass M = 1000 kg traveling at 45.0 km/hour enters a banked turn covered with ice. The road…

A:

Q: How much percent of oxygen by weight does it make up in the air?

A: Air is mixture of lots of gases in which nitrogen and oxygen have dominant position. by volume…

Q: In a collision between two unequal masses, how does the impulse imparted to the smaller mass by the…

A: When collision occurs between two unequal mass, then the velocity of them is reversed. If two masses…

Q: Consider a stick 1.00 m long and its moments of inertia about axes perpendicular to the stick's…

A:

Q: A grinding wheel is spinning at a rate of 20.0 revolutions per second. When the power to the grinder…

A:

Q: In 300 words Why is it more difficult to charge an object by rubbing on a humid day than on a dry…

A: Charging an object means deficiency of charge or excess of charge in an object. So by rubbing two…

Q: Maximum range of weather radar. One use of radio waves not explored in this to a target and uses the…

A: The situation is as shown below,

Q: Below is a conservation of energy problem. The solution to this problem is provided. Assess whether…

A: The last expression of the given question  can be simplified as "the velocity of the block in…

Q: An object with a large surface area has a mass of 20kg, and falls freely under gravity from a height…

A: Given: The mass of the object is 20 kg. The initial height of the object from the ground is 25 m.…

Q: A container with 24 L of nitrogen gas at 2 atm and another container with 12 L of oxygen gas at 2…

A: The number of moles of nitrogen and and oxygen are given by nnitrogen=PVnitrogenRTnoxygen=PVoxygenRT

Q: In the figure below, a circular loop is moved at a constant velocity through regions where uniform…

A: Apply Fleming right hand thumb rule to find the direction of Emf and magnetic field. Here , the…

Q: A bowling ball of mass 7.29 kg and radius 10.8 cm rolls without slipping down a lane at 2.90 m/s.…

A: Ball has mass(m) =7.29 Kg Radius of ball(r) =10.8 Cm=0.108 m As ball is a solid sphere, it's moment…

Q: What type of laser and wavelength is used for the Optical Tweezer application?

A: Introduction:-  Optical Tweezer A non-invasive method for handling microscopic-sized particles is…

Q: Consider a stick 1.00 m long and its moments of inertia about axes perpendicular to the stick's…

A:

Q: A pump is rated to deliver 50.0 gal/min. Find the velocity of the water in (a) a 6.00-in diameter…

A: 1 gallon=3.785 litres 50 gallon=50*3.785=189.25 litre Pump delivers 189.25 litre per minute of water…

Q: A person of mass 70 kg stands at the center of a rotating merry-go-round platform of radius 3.3 m…

A:

Q: An object is placed 20 cm to the left of a converging lens of focal length 30 cm. A diverging lens o…

A:

Q: The figure shows four orange point masses and four numbered blue axes. Each mass has m = 5.7 kg and…

A:

Q: A constant force of 20 N is applied to an object of mass 8.0 kg at an angle of 25° with the…

A: Given data:  Force (F) = 20 N Mass (m) = 8.0 kg Angle (θ) = 25°, with the horizontal  Displacement…

Q: A ball with a mass of 10.0 kg is at rest at the top of a frictionless inclined plane of length 8.00…

A: Write the given values with the suitable variables. m=10 kgL=8 mθ=30°μk=0.4 Here, m, L, θ, and μk…

Q: Arrange and categorize the Electromagnetic waves in the Electromagnetic spectrum into ionizing and…

A:

Q: White light is spread out into its spectral components by a diffraction grating. If the grating has…

A: This is a problem of Fraunhofer diffraction through a plane diffraction grating.

Q: Commonly used units for solar insolation are watts/day Btu/ft²/day watts Btu

A: Solar insulation The flux of solar radiation per unit of horizontal area for a specific location is…

Q: 1. In beta decay, an atomic nucleus emits an electron as it turns into another type of nucleus. A…

A:

Q: A ship of mass 4.5 x 100 kg starts from rest under the force a constant propeller with a thrust of…

A: Given:  Mass of the ship: m = 4.5×105 kg Thrust force F = 900,000 N Resistance force, R= 150,000 v…

Q: A television camera is positioned 4000 ft from the base of a rocket launching pad. The angle of…

A:

Q: single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.210 A. The…

A:

Q: 2. A 30 kg child sits on the edge of a merry-go-round with a radius 5.0 m. The merry-go-round…

A: Now

Q: A 87 g ball moving at 118 cm/s collides head-on with a stationary 13 g ball. Determine the speed of…

A:

Q: A capacitor is connected to an AC source. If the maximum current in the circuit is 0.580 A and the…

A:

Q: What is the velocity of a 1000 kg car with 480,000 J of kinetic energy? Can you determine its…

A: Given: The mass of the object is 1000 kg. The kinetic energy of the object is 480000 J.

Q: For the cube from problem 1, instead of having a person push the cube, we are going to attach a…

A:

Q: The mass of an elevator cab, including passengers, is 3.1 x 103 kg. It moves 180 m up the elevator…

A: Given data: Mass (m) = 3.1×103 kg Height (h) = 180 m Time (t) = 21 s Required: The average rate of…

Q: Intense white light is incident on a diffraction grating that has 672 lines/mm. (a) What is the…

A:

Q: The formula v= square root 2gh gives the velocity​ v, in feet per​ second, of an object after it…

A:

Q: 1. Answer the following True/False question  a. Metallic expansion thermometers use mechanical…

A:

Q: 1. A flat, square surface with sides of length L is described by the equations x = L (0 ≤ y ≤L,0 ≤z…

A: The amount of electric lines of force (or electric field lines), which cross a specific area, is…

Q: A 2.3-kg Rocket traveling at 6.1 m/s collides head-on with a 3.5-kg object traveling in the opposite…

A: Given data as per question mass of rocket  =  2.3kg mass of object =  3.5kg

Q: The transverse displacement of a stretched string from equilibrium as a function of time and…

A: Given:-  The transverse displacement of the stretched string form the equilibrium as a function of…

Q: Learning A disk between vertebrae in the spine is subjected to a shearing force of 675 N. Find its…

A:

Q: Light of wavelength 615 nm falls on a double slit, and the first bright fringe of the interference…

A: λ=615nmθ=13°m=1let d be the separation b/w the slits

Q: (8c29p11) A long hairpin is formed by bending a very long wire, as shown. If the wire caries a…

A:

Q: light wave in air enters a substance in which light travels at 2.64×108 m/s at an angle of 48o to…

A:

Q: Two stars have an angular separation of 8.25 x 10-8 rad when viewed in the night sky from Earth.…

A: Given information:- 1. The angular separation of the two stars is given as θ=8.25×10-8 rad. 2. The…