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A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric po
You want to practice zero g, i.e. not feeling any gravity. What velocity (ft/s) is required to cancel gravity at the top of the circle
A closed 2.0 liter container holds 3.0 mol of an monatomic gas. Pressure atm. Find the volume of the open container and Final temperature
Will is attempting to swim to a dock directly across a river from his current position. In what direction should he swim relative to his intended path
A hollow metal sphere has 6 cm and 10 cm inner and outer radii, respectively, What are the strength and direction of the electric fi eld at points 4, 8, and 12 cm from the centre
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.27 m/s. What is his speed when he catches up
The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it is 0.0045 (C°)-1. find the percentage increase in the resistance in a tungsten wire
A photographer uses his camera, whose lens has a 60mm focal length, to focus on an object 2.5m away. How far must the lens move to focus on this second object
Standing at the edge of a cliff 33.5 m high, you drop a ball. Later, you throw a second ball downward with an initial speed of 12.7 m/s. What is the increase in speed of the second ball
What is the total distance traveled by a car if for 130 m with a deceleration of 1.20 m/s^2 and 50 m with a deceleration of 7.10m/s^2?
A submarine on the ocean surface receives a sonar echo indicating an underwater object. What is the object's depth
A thin 5.6-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. What is the frequency of the rod's vibration
A world-class sprinter accelerates to his maximum speed in 4s . He then maintains this speed for the remainder of a 100m race, What is his average acceleration for the entire rac
A 27-cm-long wire with a linear density of 25 passes across the open end of an 83-cm-long open-closed tube of air. What is the tension in the wire
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. estimate the diameter of the pinh
A mass of 2 kg is attached to a spring with spring constant k=100 N/m. What is the period of oscillation for the mass
Draft Hypothesis and Design Draft Hypothesis and Design
A planet of mass 6 × 1024 kg is at location ‹ -3 × 1011, 8 × 1011, 0 › m. A star of mass 9 × 1030 kg is at location ‹ 7 × 1011, -5 × 1011,
a solid, uniform sphere (r=20 cm, density= 850 kg/m cubed) is attached by a massless cable to the ceiling of a room, find the apparent weight (the reading on the scale) when the cable tension is
A gas sample enclosed in a rigid metal container at room temperature (20.0°C) has an absolute pressure p1. The container is immersed in hot water until it warms to 40.0°C. What is the new absolut
A boat is to cross a river on a course directed 20.0° north of east in 10 minutes from point A to point B. The distance from point A to point B is 815m. If the river flows at a speed of 3.0 k
Slopping air track: A glider moves frictionlessly along an air track that has been tilted by 1.5 inches over a span of 1.00 meters. What is the expected acceleration of the glider
Draw the displacement for the father and son.
a physics professor demonstrates the doppler effect by tying a 600hz sound generator to a 1.0-m-long rop, what are the highest and lowest frequencies heard by a student in the classs room
A 4.80-m clothesline is hung between two poles that are 4.76 m apart