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A vehicle is clocked for 2.5 seconds, and it is found that it accelerates at -3.89 m/s squared. Its also found that the vehicle was moving at 15.0 m/s [S] at the end of the timing. How fast was the vehicle moving when the timer began? (How can I do this with acceleration equals velocity over time formula OR acceleration equals final velocity minus initial velocity over time?)
If the speed of sound is 1100 feet per second and a tuning fork oscillates at 440 cycles per second, what is the wavelength of sound produced.
A block of mass 2 kg is attached to a spring. The block/mass system is on a horizontal frictionless surface. What is the maximum acceleration of the block
Five equal negative point charges -q are placed symmetrically around a circle of radius R as shown. Use a rough approximation to express the magnitude of electric field E at a point on the positive x axis a distance R from the center of the circle..
two coaxial cylindrical conductors . the inner cylinder has radius a 2 cm length 10 m and caries a total charge of
the energy of formation of a vacancy in copper is 1ev. what is approximate relative change in the density of copper due
An 81.0 N box is pulled 22.0 m up a 30° incline by an applied force of 102 N that points upward, parallel to the incline. calculate the change in the kinetic energy of the box
A proton moves at a speed of 1100 m/s in a direction perpendicular to a magnetic field with a magnitude of 0.80 T
Three resistors, with values of 2.0, 4.0 and 8.0 ohm, correspondingly, are connected in parallel. Estimate the overall resistance of this combination
The charge on a proton is 1.602 × 10-19 C. What is the magnetic field in that region of space? Answer in units of T.
If you did an experiment and measured g to be 9.3 m/s2, and the accepted value is 9.81 m/s2, what was your percent error
In a large centrifuge used for trainingpilots and astronauts, a small chamber is fixed at the end of arigid arm that rotates in a horizontal circle. A trainee riding inthe chamber of a centrifuge rotating with a constant angular speedof 2.6 rad/s ..
The radiation emitted by the primordial fireball of the big bang had a blackbody spectrum corresponding to about 3000 K. We can still see this radiation but now it has a spectrum corresponding to about 2.7 K. 1. What is this radiation called and why ..
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