A child is holding a string with a ball tied at the end. The child spins around in a circle causing the ball to travel in uniform circular motion. While doing this, the 1.3 m long string makes a 48.8◦angle below horizontal. What is the tangential speed of the ball? Solution provided is incorrect. Answer should be v=2.7m/s

Q: 5. The graph below shows the displacement of a particle in a wave of wavelength 4.0m. Determine the ...

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Q: When a ball is thrown straight up into the air, the acceleration of the ball is zero at the moment i...

A: Given that:- A ball is thrown straight up in the air.

Q: Assignment 2 A particular person's lower leg is 56 cm long and weighs 9.5 kg. If allowed to swing fr...

A: Given value--- length = 56 cm. weighs/ 9.5 kg. We have to find--- Time period?

Q: Part A A spherical shell (inner radius a= 4.4 Cm and outer radius b 6cm) has a uniform charge densit...

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Q: a uniform electric is indicated by electric line.  the electric magnitude is 150 n/c. if the object ...

A: Given that electric field   E = 150 N/C  d = 0.25m  

Q: 8. A 0.2 kg ball is thrown upward with and initial speed of 10 m/s. a. What is the force acting on ...

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Q: Draw the free body diagram for this figure and show the forces along y-axis and x-axis. 40° T2 30° T...

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Q: Why is it important to perform safety checks on hand grenade?

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Q: The edges of a shocbox arc moasured to be 11.7 cm, 18.9 cm, and 29 cm. Determine the valume of the b...

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Q: Why does a car always attract dust right after it is polished?

A: The car always attract dust right after polishing because of the static electric field.

Q: Given data Force 4 N Displacement=1 m Work done

A: Given data : Displacement=S Force=F   To find : Work done

Q: Two point charges, +2.70 μC and -8.60 μC, are separated by 1.50 m. What is the electric potential mi...

A: Given value--- charge q1 = 2.70 micro C. charge q2 = -8.60 micro C.  separation = 1.5 m. We have t...

Q: Assume the total heat of vaporization (per gram) of water can be used to supply the energy needed to...

A: Let the total heat of vaporization per gram of water be 'E'. Since, water has the molecular formula ...

Q: A small 5-g fly is buzzing along and hits a spider web. The spid proceed to oscillate with a time pe...

A: We know that the formula of the angular velocity in terms of the Time period is given as  ω= 2πT ---...

Q: A person drinks a glass of 250 cm3 every morning milk after 15 days, how much mass of milk will he h...

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Q: 9- At what speed must a ball be thrown upwards to reach a maximum height of 25m?

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Q: In the circuit of Figure 6, if vị = v/8 and the power delivered by the source is 8 mW, find R, v, V1...

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Q: 1. Neutrons produced in a reactor are known as thermal neutrons because their kinetic 3 energies hav...

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Q: The two charges in the figure below are separated by d = 2.50 cm. (Let q = -17.5 nC and q2 = 28.0 nC...

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Q: 1. Compare the electrostatic force between an electron and proton separated by 0.530 x 1010 m with t...

A: Given that:- Separation between electron and proton=d=0.530×10^-10 m

Q: A level pipe contains a nonviscous, incompressible fluid with a density 1200 kg/m3 that is flowing s...

A: Given value--- density = 1200 kg/m3.  pressure at point 1 = 300 kPa. speed at point 1 = 20 m/s. pre...

Q: DIRECTIONS: Solve completely what is given and required by converting the units based on the DENSITY...

A: Density of an object is defined as the mass per unit volume. Density formula: Density=MassVolume

Q: t is interesting to note that there is a big difference in size between the space craft required to ...

A: In this question we have to explain the size difference between the space craft which leaves Earth a...

Q: (d) the force of gravity on the bucket in part (c) The bucket does work on gravity. The force of gra...

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Q: Two spaceships approach the Earth from opposite directions. According to a stationary observer on ea...

A: Given that:- Two spaceships A and B approch the earth from opposite directions.

Q: There are very large numbers of charged particles in most objects, Why, then, don't most objects exh...

A: There are very large numbers of charged particles in most objects, Why, then, don't most objects exh...

Q: On a wide level field, a ball is tackled at 40 degrees above the horizontal at a speed of 30 m/s. Wh...

A: Given Angle above horizontalθ=40°Speed of ball(u)=30 m/s

Q: An object moves along a straight line with acceleration -8ms?. It starts its motion at the origin wi...

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Q: Weight refers to the force of gravity acting on a mass. We often calculate the weight of an object b...

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Q: An object is attached to a spring and rests 5 feet above the ground. It is pulled down by 3 feet, re...

A: Given that the object reaches its highest point for the first time in 3 seconds. It means that time ...

Q: Two spaceships approach the Earth from opposite directions. According to a stationary observer on ea...

A: The answer is below

Q: A car is moving with a velocity of 12 m/s [E]. It makes a turn over 8.0 s so that the velocity is 15...

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Q: As shown below, a positively charged particle is immersed in a B-field and as a result is moving COU...

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Q: A jet plane has a takeoff speed of vto = 72 m/s and can move along the runway at an average accelera...

A: Given data : Distance (S)=1.4 Km Acceleration (a)=1.7 m/s2 Initial speed (U)=0  Take off speed=72 m/...

Q: 30° 40° | T. 1 2 2 kg

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Q: The work done by an electric force in moving a charge from point A to point B is 3.28 x 10-3 J. The ...

A: Given: Work done by an electric force in moving a charge from point A to point B= 3.28 x 10-3 J Elec...

Q: 6-3. The tip of a one-link robot is located at 0 = -n/4 rad at time t = 0 s as shown in Fig. P6.3. T...

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Q: : a) The photon energy of a CO2 laser is 0.117eV. Calculate the wavelength of the laser (for full po...

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Q: A man travel according to these series of location A = 1-75 km, 20°N of E: B: 2.00 km, IS W of N and...

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Q: When a ball is thrown straight up into the air, the velocity of the ball is zero at the moment it re...

A: Given A ball is thrown vertically upward.

Q: Given data Charge=7 mC time=3 s Determine current

A: Given, Q = 7 mC t = 3 second  

Q: A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 22.0 m. She pushes ...

A: a) Draw the free-body diagram of the cart.

Q: A plane is capable of flying 905 km/h without wind. It flies with a heading of [N 22.0° W]. A wind o...

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Q: At 6:00 pm, it took you 14.14 seconds to heat an 800.0g pan initially at zero to 25.0∘C on the stove...

A: energy supplied by stove in 14.14 seconds = 628X14.14=9979.92 Joules . Then 9979.92=0.8×Cpan×25-0Cpa...

Q: 8) A stone moves in a circle of radius 60.0 cm and has a centripetal acceleration of 90 m/s2. How lo...

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Q: At the Earth's surface, a projectile is launched straight up at a speed of 7.5 km/s. To what height ...

A: Given value--- initial speed = 7.5 km/s. We have to find--- height?

Q: A billiard ball of mass m, experiences a perfectly elastic collision with another billiard ball with...

A: (a) Since mass m2 is at rest initially, its initial velocity is u2=0. Apply conservation of momentum...

Q: In a test run, a certain car accelerates uniformly from zero to 19.8 m/s in 2.50 s. (a) What is the ...

A: Given: Initial velocity , u = 0 Final velocity, v = 19.8 m/s Time , t = 2.50 s   To determine: (a) ...

Q: 1. An iron atom has 26 protons, 30 neutrons and 26 electrons. a. What is the total charge of its nuc...

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Q: The period of a sitmple pendulum, defined as the time necessary for one complete oscillation, is mea...

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.