### Find the child''s speeds at the lowest point

Assignment Help Physics
##### Reference no: EM138811

Q1. A 35.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each chain at the lowest point is 352 N. Find the child's speeds at the lowest point.

Q2. The resistor in an RC circuit has a resistance of 150 Omega.

(a)What capacitance must be used in this circuit if the time constant is to be 3.7 ms?

(b)Using the capacitance determined in part (a), calculate the current in the circuit 7.4 ms after the switch is closed. Suppose that the capacitor is uncharged initially and that the emf of the battery is 9.0 V

#### Questions Cloud

 How long is the parachutist in the air : A brick is thrown upward from the top of a building at an angle of 45° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building. Find out the effective spring constant of molecule : When Babe Ruth hit a homer over the 7.5 -high right-field fence 98 from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.4 above the ground and its path initially made a 37 angle with the grou.. What is the tension while rock is at the bottom : A rock of mass m = 1.0 kg is tied to a string of length L = 1.9 m and is twirled in a vertical circle. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the string is zero when the.. What is the wavelength of these gamma rays : A child slides down a slide with the 29 degree incline, and at the bottom her speed is precisely half of what it would have been if the slide had been frictionless. Compute the coefficient of sliding between the child and the slide. Find the child''s speeds at the lowest point : Using the capacitance determined in part (a), calculate the current in the circuit 7.4 ms after the switch is closed. Suppose that the capacitor is uncharged initially and that the emf of the battery is 9.0 V What is the equivalent resistance of the light string : An engine does 20000 J of work and rejects 6120 J of heat into a cold reservoir whose temperature is 285 K. What would be the smallest possible temperature of the hot reservoir. What is the height y to which the spans rise : A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0 N directed at an angle of 42.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute.. What is the density of the object : An object weighs 302 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 220 N. When it is immersed in oil, it weighs 257 N. what is the density of the object. The stopping distance when the surface is dry : A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits other kid 2.4 away squares in the back, at a point 0.85 above the ground. What was the initial speed of the water.

### Write a Review

#### Establish steady-state electric field inside nichrome wire

Establish steady-state electric field inside Nichrome wire

#### What is the main possible displacement of the shopper

What is the main possible displacement of the shopper

#### What is work done by the non-conservative force

What is work done by the non-conservative force

#### What is the acceleration of satellite

A 2,700-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6,270 m/s. The radius of the circular orbit is 8.72 × 10^6 m. What is the acceleration of satellite.

#### What is magnitude of the ducks velocity

Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.

#### What is total mechanical energy of the motion

What is total mechanical energy of the motion

#### What is an average strain in the spike all through impact

A 32.0 kg hammer strikes a steel spike 2.70 cm in diameter while moving with speed of 24.0 m/s. The hammer rebounds with speed 11.0 m/s after 0.110 s. What is an average strain in the spike all through the impact.

#### Where does package hit the ground relative to the point

Where does package hit the ground relative to the point

#### What is the change in length of the rope

What is the change in length of the rope whilst the skier has the acceleration whose magnitude is 0.65 m/s2.

#### Illustrate the force vectors with their tails

Illustrate the force vectors with their tails at the origin of coordinate system. The orientation of your vectors will be graded. The exact lengths of your vectors will not be graded but relative length of one to the other will be graded.

#### Magnitude of the centripetal acceleration of the satellite

A pipe open at one end has a fundamental frequency of 256 Hz. A second pipe,identical to first pipe, is shortened by cutting off a portion of the open end. When  both pipes vibrate at their fundamental frequencies, a beat frequency of 12 Hz is heard..

#### What is the magnetic field strength

What is the magnetic field strength